![Россыпь камней Россыпь камней](https://www.alltime.ru/obj/article/image-blog/Gemstones/Gemstone_6.jpg)
☘Диаграмма Удельного Веса
Под удельным весом понимается относительная плотность драгоценности, в частности, камня. Измеряться он может как относительная шкала плотности самоцвета к тому же измерению плотности воды. Итог выводится в виде числа, показывающего, в какой степени драгоценный минерал тяжелее того же объёма воды.
Если отталкиваться от научных источников, удельный вес показывается в качестве отношения массы нужного вещества к массе взятого подобного по объёму количества воды, при этом температуры её должна быть 4º. Если говорить о большинстве камней, то они зачастую плотнее воды раза в 3-4. Вес при этом выражается при помощи дроби, к примеру, для алмаза это значение будет 3.52. Самый плотный из всех минералов – это циркон, его вес около 4.73.
Данная величина считается главным параметром в определении камней, это может пригодиться как для самого покупателя драгоценностей, так и для специалиста, изучающего драгоценные камни. К слову сказать, камень в 1 карат с высоким уровнем удельного веса окажется по размерам меньше 1-каратного камня с уровнем удельного веса ниже. Нет ничего удивительного, что, к примеру, сапфир при покупке окажется меньше алмаза, зависеть размер будет от его более высокого уровня удельного веса. Если же говорить о, к примеру, турмалине в 5 карат, его размеры будут намного больше, чем вы могли подумать до покупки, так как этот минерал характерен своим невысоким удельным весом.
☘На представленной диаграмме можно увидеть вес 145 видов драгоценных камней, ранжирование приведено в порядке убывания.
Cassiterite |
![Buy cassiterite at GemSelect](https://www.gemselect.com/other-info/graphics/cassiterite-gemstone_.jpg) |
Specific Gravity |
6.7 - 7.1 |
Chemical Composition |
Tin oxide |
Crystal Structure |
Tetragonal |
Hematite |
![Buy hematite at GemSelect](https://www.gemselect.com/other-info/graphics/hematite-gem_.jpg) |
Specific Gravity |
5.12 - 5.28 |
Chemical Composition |
Iron oxide |
Crystal Structure |
Trigonal |
Rainbow Pyrite |
![Buy rainbow pyrite at GemSelect](https://www.gemselect.com/other-info/graphics/rainbow-pyrite-gem_.jpg) |
Specific Gravity |
5 - 5.2 |
Chemical Composition |
Cubic |
Crystal Structure |
Iron sulphide |
Spessartite Garnet |
![Buy spessartite garnet at GemSelect](https://www.gemselect.com/other-info/graphics/spessartite-garnet-rf.jpg) |
Specific Gravity |
4.12 - 4.18 |
Chemical Composition |
Manganese aluminium silicate |
Crystal Structure |
Cubic |
Smithsonite |
![Buy smithsonite at GemSelect](https://www.gemselect.com/other-info/graphics/smithsonite-gem_.jpg) |
Specific Gravity |
4 - 4.65 |
Chemical Composition |
Zinc carbonate |
Crystal Structure |
Trigonal |
Star Ruby |
![Buy star ruby at GemSelect](https://www.gemselect.com/other-info/graphics/star-ruby-gem_.jpg) |
Specific Gravity |
3.97 - 4.05 |
Chemical Composition |
Aluminum oxide |
Crystal Structure |
Trigonal |
Ruby |
![Buy ruby at GemSelect](https://www.gemselect.com/other-info/graphics/ruby-rf.jpg) |
Specific Gravity |
3.97 - 4.05 |
Chemical Composition |
Aluminum oxide |
Crystal Structure |
Trigonal |
Color Change Sapphire |
![Buy color change sapphire at GemSelect](https://www.gemselect.com/other-info/graphics/color-change-sapphire-gem_.jpg) |
Specific Gravity |
3.95 - 4.03 |
Chemical Composition |
Aluminum oxide |
Crystal Structure |
Trigonal |
Sapphire |
![Buy sapphire at GemSelect](https://www.gemselect.com/other-info/graphics/sapphire-rf.jpg) |
Specific Gravity |
3.95 - 4.03 |
Chemical Composition |
Aluminum oxide |
Crystal Structure |
Trigonal |
Star Sapphire |
![Buy star sapphire at GemSelect](https://www.gemselect.com/other-info/graphics/star-sapphire-gem_.jpg) |
Specific Gravity |
3.95 - 4.03 |
Chemical Composition |
Aluminium oxide |
Crystal Structure |
Trigonal |
Almandine Garnet |
![Buy almandine garnet at GemSelect](https://www.gemselect.com/other-info/graphics/almandine-garnet-rf.jpg) |
Specific Gravity |
3.93 - 4.3 |
Chemical Composition |
Iron aluminium silicate |
Crystal Structure |
Cubic |
Zircon |
![Buy zircon at GemSelect](https://www.gemselect.com/other-info/graphics/zircon-rf.jpg) |
Specific Gravity |
3.93 - 4.73 |
Chemical Composition |
Zirconium silicate |
Crystal Structure |
Tetragonal |
Sphalerite |
![Buy sphalerite at GemSelect](https://www.gemselect.com/other-info/graphics/sphalerite-gem_.jpg) |
Specific Gravity |
3.9 - 4.1 |
Chemical Composition |
Zinc sulphide |
Crystal Structure |
Cubic |
Rhodolite Garnet |
![Buy rhodolite garnet at GemSelect](https://www.gemselect.com/other-info/graphics/rhodolite-garnet-rf.jpg) |
Specific Gravity |
3.85 |
Chemical Composition |
Magnesium aluminum silicate |
Crystal Structure |
Cubic |
Gaspeite |
![Buy gaspeite at GemSelect](https://www.gemselect.com/other-info/graphics/gaspeite-gem_.jpg) |
Specific Gravity |
3.71 |
Chemical Composition |
Nickel magnesium iron carbonate |
Crystal Structure |
Trigonal |
Melanite |
![Buy melanite at GemSelect](https://www.gemselect.com/other-info/graphics/melanite-gem_.jpg) |
Specific Gravity |
3.7 - 4.1 |
Chemical Composition |
Calcium iron silicate |
Crystal Structure |
Cubic |
Chrysoberyl Cat's Eye |
![Buy chrysoberyl cat's eye at GemSelect](https://www.gemselect.com/other-info/graphics/chrysoberyl-cats-eye-gem_.jpg) |
Specific Gravity |
3.7 - 3.78 |
Chemical Composition |
Beryllium aluminium oxide |
Crystal Structure |
Orthorhombic |
Alexandrite |
![Buy alexandrite at GemSelect](https://www.gemselect.com/other-info/graphics/alexandrite-gem_.jpg) |
Specific Gravity |
3.7 - 3.78 |
Chemical Composition |
Beryllium aluminum oxide |
Crystal Structure |
Orthorhombic |
Azurite |
![Buy azurite at GemSelect](https://www.gemselect.com/other-info/graphics/azurite-rf.jpg) |
Specific Gravity |
3.7 - 3.9 |
Chemical Composition |
Basic Copper Carbonate |
Crystal Structure |
Monoclinic |
Demantoid Garnet |
![Buy demantoid garnet at GemSelect](https://www.gemselect.com/other-info/graphics/demantoid-garnet-gem_.jpg) |
Specific Gravity |
3.7 - 4.1 |
Chemical Composition |
Calcium iron silicate |
Crystal Structure |
Cubic |
Chrysoberyl |
![Buy chrysoberyl at GemSelect](https://www.gemselect.com/other-info/graphics/chrysoberyl-rf.jpg) |
Specific Gravity |
3.7 - 3.78 |
Chemical Composition |
Beryllium aluminium oxide |
Crystal Structure |
Orthorhombic |
Hessonite Garnet |
![Buy hessonite garnet at GemSelect](https://www.gemselect.com/other-info/graphics/hessonite-garnet-gem_.jpg) |
Specific Gravity |
3.64 - 3.69 |
Chemical Composition |
Calcium aluminum silicate |
Crystal Structure |
Cubic |
Color-Change Garnet |
![Buy color-change garnet at GemSelect](https://www.gemselect.com/other-info/graphics/color-change-garnet-gem_.jpg) |
Specific Gravity |
3.62 - 3.87 |
Chemical Composition |
Magnesium aluminum silicate |
Crystal Structure |
Cubic |
Pyrope Garnet |
![Buy pyrope garnet at GemSelect](https://www.gemselect.com/other-info/graphics/garnet-rf.jpg) |
Specific Gravity |
3.62 - 3.87 |
Chemical Composition |
Magnesiium aluminum silicate |
Crystal Structure |
Cubic |
Star Garnet |
![Buy star garnet at GemSelect](https://www.gemselect.com/other-info/graphics/star-garnet-gem_.jpg) |
Specific Gravity |
3.62 - 3.87 |
Chemical Composition |
Iron aluminum silicate |
Crystal Structure |
Rhombic |
Grossularite Garnet |
![Buy grossularite garnet at GemSelect](https://www.gemselect.com/other-info/graphics/grossularite-garnet-rf.jpg) |
Specific Gravity |
3.57 - 3.73 |
Chemical Composition |
Calcium aluminum silicate |
Crystal Structure |
Cubic |
Mali Garnet |
![Buy Mali garnet at GemSelect](https://www.gemselect.com/other-info/graphics/mali-garnet-gem_.jpg) |
Specific Gravity |
3.57 - 3.73 |
Chemical Composition |
Calcium aluminum silicate |
Crystal Structure |
Cubic |
Tsavorite Garnet |
![Buy tsavorite garnet at GemSelect](https://www.gemselect.com/other-info/graphics/tsavorite-garnet-rf.jpg) |
Specific Gravity |
3.57 - 3.73 |
Chemical Composition |
Calcium aluminum silicate |
Crystal Structure |
Rhombic |
Spinel |
![Buy spinel at GemSelect](https://www.gemselect.com/other-info/graphics/spinel-rf.jpg) |
Specific Gravity |
3.54 - 3.63 |
Chemical Composition |
Magnesium aluminium oxide |
Crystal Structure |
Cubic |
Kyanite |
![Buy kyanite at GemSelect](https://www.gemselect.com/other-info/graphics/kyanite-rf.jpg) |
Specific Gravity |
3.53 - 3.7 |
Chemical Composition |
Aluminum silicate |
Crystal Structure |
Triclinic |
Sphene |
![Buy sphene at GemSelect](https://www.gemselect.com/other-info/graphics/sphene-rf.jpg) |
Specific Gravity |
3.52 - 3.54 |
Chemical Composition |
Calcium titanium silicate |
Crystal Structure |
Monoclinic |
Diamond |
![Buy diamond at GemSelect](https://www.gemselect.com/other-info/graphics/diamond-rf.jpg) |
Specific Gravity |
3.5 - 3.53 |
Chemical Composition |
Carbon |
Crystal Structure |
Cubic |
Topaz |
![Buy topaz at GemSelect](https://www.gemselect.com/other-info/graphics/topaz-rf.jpg) |
Specific Gravity |
3.49 - 3.57 |
Chemical Composition |
Aluminum fluosilicate |
Crystal Structure |
Orthorhombic |
Mystic Topaz |
![Buy mystic topaz at GemSelect](https://www.gemselect.com/other-info/graphics/mystic-topaz-gem_.jpg) |
Specific Gravity |
3.49 - 3.57 |
Chemical Composition |
Aluminum fluosilicate |
Crystal Structure |
Orthorhombic |
Imperial Topaz |
![Buy imperial topaz at GemSelect](https://www.gemselect.com/other-info/graphics/imperial-topaz-gem_.jpg) |
Specific Gravity |
3.49 - 3.57 |
Chemical Composition |
Aluminum fluosilicate |
Crystal Structure |
Orthorhombic |
Azotic Topaz |
![Buy Azotic topaz at GemSelect](https://www.gemselect.com/other-info/graphics/azotic-topaz-gem_.jpg) |
Specific Gravity |
3.49 - 3.57 |
Chemical Composition |
Aluminum fluosilicate |
Crystal Structure |
Orthorhombic |
Rutile Topaz |
![Buy rutile topaz at GemSelect](https://www.gemselect.com/other-info/graphics/rutile-topaz-gem_.jpg) |
Specific Gravity |
3.49 - 3.57 |
Chemical Composition |
Aluminum fluorsilicate |
Crystal Structure |
Orthorhombic |
Rhodochrosite |
![Buy rhodochrosite at GemSelect](https://www.gemselect.com/other-info/graphics/rhodochrosite-gem_.jpg) |
Specific Gravity |
3.45 - 3.7 |
Chemical Composition |
Manganese carbonate |
Crystal Structure |
Trigonal |
Rhodonite |
![Buy rhodonite at GemSelect](https://www.gemselect.com/other-info/graphics/rhodonite-cabochon-gem_.jpg) |
Specific Gravity |
3.4 - 3.74 |
Chemical Composition |
Manganese silicate |
Crystal Structure |
Triclinic |
Ruby in Zoisite |
![Buy ruby in zoisite at GemSelect](https://www.gemselect.com/other-info/graphics/ruby-zoisite-rf.jpg) |
Specific Gravity |
3.35 |
Chemical Composition |
Rock containing zoisite, ruby and hornblende |
Crystal Structure |
Orthorhombic |
Tanzanite |
![Buy tanzanite at GemSelect](https://www.gemselect.com/other-info/graphics/tanzanite-rf.jpg) |
Specific Gravity |
3.35 |
Chemical Composition |
Calcium aluminium silicate |
Crystal Structure |
Orthorhombic |
Idocrase |
![Buy idocrase at GemSelect](https://www.gemselect.com/other-info/graphics/idocrase-gem_.jpg) |
Specific Gravity |
3.32 - 3.47 |
Chemical Composition |
Complex calcium aluminum silicate |
Crystal Structure |
Tetragonal |
Cat's Eye Diaspore |
![Buy cat's eye diaspore at GemSelect](https://www.gemselect.com/other-info/graphics/cats-eye-diaspore-gem_.jpg) |
Specific Gravity |
3.3 - 3.39 |
Chemical Composition |
Hydrated aluminum oxide |
Crystal Structure |
Orthorhombic |
Hemimorphite |
![Buy hemimorphite at GemSelect](https://www.gemselect.com/other-info/graphics/hemimorphite-gem_.jpg) |
Specific Gravity |
3.3 - 3.5 |
Chemical Composition |
Hydrous basic zinc silicate |
Crystal Structure |
Orthorhombic |
Color Change Diaspore |
![Buy color change diaspore at GemSelect](https://www.gemselect.com/other-info/graphics/diaspore-gem_.jpg) |
Specific Gravity |
3.3 - 3.39 |
Chemical Composition |
Hydrated aluminum oxide |
Crystal Structure |
Orthorhombic |
Peridot |
![Buy peridot at GemSelect](https://www.gemselect.com/other-info/graphics/peridot-rf.jpg) |
Specific Gravity |
3.28 - 3.48 |
Chemical Composition |
Magnesium iron silicate |
Crystal Structure |
Orthorhombic |
Axinite |
![Buy axinite at GemSelect](https://www.gemselect.com/other-info/graphics/axinite-rf.jpg) |
Specific Gravity |
3.26 - 3.36 |
Chemical Composition |
Calcium aluminum borate silicate |
Crystal Structure |
Triclinic |
Dumortierite Quartz |
![Buy dumortierite quartz at GemSelect](https://www.gemselect.com/other-info/graphics/dumortierite-quartz-gem_.jpg) |
Specific Gravity |
3.26 - 3.41 |
Chemical Composition |
Aluminum borate silicate intergrown with quartz |
Crystal Structure |
Orthorhombic |
Malachite |
![Buy malachite at GemSelect](https://www.gemselect.com/other-info/graphics/malachite-gem_.jpg) |
Specific Gravity |
3.25 - 4.1 |
Chemical Composition |
Basic copper carbonate |
Crystal Structure |
Monoclinic |
Sillimanite Cat's Eye |
![Buy sillimanite cat's eye at GemSelect](https://www.gemselect.com/other-info/graphics/sillimanite-cats-eye-gem_.jpg) |
Specific Gravity |
3.23 |
Chemical Composition |
Aluminum silicate |
Crystal Structure |
Orthorhombic |
Chrome Diopside |
![Buy chrome diopside at GemSelect](https://www.gemselect.com/other-info/graphics/chrome-diopside-rf.jpg) |
Specific Gravity |
3.22 - 3.38 |
Chemical Composition |
Calcium magnesium silicate |
Crystal Structure |
Monoclinic |
Tashmarine Diopside |
![Buy tashmarine diopside at GemSelect](https://www.gemselect.com/other-info/graphics/tashmarine-diopside-gem_.jpg) |
Specific Gravity |
3.22 - 3.38 |
Chemical Composition |
Calcium magnesium silicate |
Crystal Structure |
Monoclinic |
Star Diopside |
![Buy star diopside at GemSelect](https://www.gemselect.com/other-info/graphics/star-diopside-gem_.jpg) |
Specific Gravity |
3.22 - 3.38 |
Chemical Composition |
Calcium manganese silicate |
Crystal Structure |
Monoclinic |
Hiddenite |
![Buy hiddenite at GemSelect](https://www.gemselect.com/other-info/graphics/hiddenite-rf.jpg) |
Specific Gravity |
3.17 - 3.19 |
Chemical Composition |
Lithium aluminum silicate |
Crystal Structure |
Monoclinic |
Apatite |
![Buy apatite at GemSelect](https://www.gemselect.com/other-info/graphics/apatite-rf.jpg) |
Specific Gravity |
3.16 - 3.23 |
Chemical Composition |
Basic fluoro- and chloro-calicum phosphate |
Crystal Structure |
Hexagonal |
Cat's Eye Apatite |
![Buy cat's eye apatite at GemSelect](https://www.gemselect.com/other-info/graphics/cats-eye-apatite-gem_.jpg) |
Specific Gravity |
3.16 - 3.23 |
Chemical Composition |
Basic fluoro- and chloro-calicum phosphate |
Crystal Structure |
Hexagonal |
Spodumene |
![Buy spodumene at GemSelect](https://www.gemselect.com/other-info/graphics/spodumene-rf.jpg) |
Specific Gravity |
3.15 - 3.21 |
Chemical Composition |
Lithium aluminum silicate |
Crystal Structure |
Monoclinic |
Kunzite |
![Buy kunzite at GemSelect](https://www.gemselect.com/other-info/graphics/kunzite-rf.jpg) |
Specific Gravity |
3.15 - 3.21 |
Chemical Composition |
Lithium aluminum silicate |
Crystal Structure |
Monoclinic |
Clinohumite |
![Buy clinohumite at GemSelect](https://www.gemselect.com/other-info/graphics/clinohumite-gem_.jpg) |
Specific Gravity |
3.13 - 3.75 |
Chemical Composition |
Magnesium silicate |
Crystal Structure |
Monoclinic |
Andalusite |
![Buy andalusite at GemSelect](https://www.gemselect.com/other-info/graphics/andalusite-rf.jpg) |
Specific Gravity |
3.05 - 3.2 |
Chemical Composition |
Aluminium silicate |
Crystal Structure |
Orthorhombic |
Fluorite |
![Buy fluorite at GemSelect](https://www.gemselect.com/other-info/graphics/fluorite-rf.jpg) |
Specific Gravity |
3 - 3.25 |
Chemical Composition |
Calcium fluoride |
Crystal Structure |
Cubic |
Nuummite |
![Buy Nuummite at GemSelect](https://www.gemselect.com/other-info/graphics/nuumite-gem_.jpg) |
Specific Gravity |
3 |
Chemical Composition |
Rock containing gedrite and anthophyllite |
Crystal Structure |
Lamellar fibrous structure |
Danburite |
![Buy danburite at GemSelect](https://www.gemselect.com/other-info/graphics/danburite-gemstone_.jpg) |
Specific Gravity |
2.97 - 3.03 |
Chemical Composition |
Calcium boric silicate |
Crystal Structure |
Orthorhombic |
Jadeite |
![Buy jadeite at GemSelect](https://www.gemselect.com/other-info/graphics/jade-rf.jpg) |
Specific Gravity |
2.9 - 3.03 |
Chemical Composition |
Basic calcium magnesium iron silicate |
Crystal Structure |
Monoclinic |
Nephrite Jade |
![Buy nephrite jade at GemSelect](https://www.gemselect.com/other-info/graphics/nephrite-jade-rf.jpg) |
Specific Gravity |
2.9 - 3.03 |
Chemical Composition |
Calcium magnesium iron silicate |
Crystal Structure |
Monoclinic |
Tourmaline |
![Buy tourmaline at GemSelect](https://www.gemselect.com/other-info/graphics/tourmaline-rf.jpg) |
Specific Gravity |
2.83 - 3.32 |
Chemical Composition |
Silicate compounded with aluminium, iron, magnesium, sodium, lithium or potassium |
Crystal Structure |
Trigonal |
Chrome Tourmaline |
![Buy chrome tourmaline at GemSelect](https://www.gemselect.com/other-info/graphics/chrome-tourmaline-gem_.jpg) |
Specific Gravity |
2.82 - 3.32 |
Chemical Composition |
Silicate compounded with aluminium, iron, magnesium, sodium, lithium or potassium |
Crystal Structure |
Trigonal |
Prehnite |
![Buy prehnite at GemSelect](https://www.gemselect.com/other-info/graphics/prehnite-rf.jpg) |
Specific Gravity |
2.82 - 2.94 |
Chemical Composition |
Basic calcium aluminum silicate |
Crystal Structure |
Orthorhombic |
Paraiba Tourmaline |
![Buy Paraiba tourmaline at GemSelect](https://www.gemselect.com/other-info/graphics/paraiba-tourmaline-gem_.jpg) |
Specific Gravity |
2.82 - 3.32 |
Chemical Composition |
Silicate compounded with aluminium, iron, magnesium, sodium, lithium or potassium |
Crystal Structure |
Trigonal |
Cat's Eye Tourmaline |
![Buy cat's eye tourmaline at GemSelect](https://www.gemselect.com/other-info/graphics/cats-eye-tourmaline-gem_.jpg) |
Specific Gravity |
2.82 - 3.32 |
Chemical Composition |
Silicate compounded with aluminium, iron, magnesium, sodium, lithium or potassium |
Crystal Structure |
Trigonal |
Lepidolite |
![Buy lepidolite at GemSelect](https://www.gemselect.com/other-info/graphics/lepidolite-gem_.jpg) |
Specific Gravity |
2.8 - 2.9 |
Chemical Composition |
Potassium lithium aluminum fluoro-silicate |
Crystal Structure |
Monoclinic |
Verdite |
![Buy verdite at GemSelect](https://www.gemselect.com/other-info/graphics/verdite-gem_.jpg) |
Specific Gravity |
2.76 - 3 |
Chemical Composition |
Serpentine rock |
Crystal Structure |
Monoclinic |
Sugilite |
![Buy sugilite at GemSelect](https://www.gemselect.com/other-info/graphics/sugilite-gem_.jpg) |
Specific Gravity |
2.76 - 2.8 |
Chemical Composition |
Potassium sodium lithium iron manganese aluminium |
Crystal Structure |
Hexagonal |
Ammolite |
![Buy ammolite at GemSelect](https://www.gemselect.com/other-info/graphics/ammolite-gem_.jpg) |
Specific Gravity |
2.75 - 2.8 |
Chemical Composition |
Mainly aragonite (with calcite, silica and pyrite) |
Crystal Structure |
Amorphous |
Larimar |
![Buy Larimar at GemSelect](https://www.gemselect.com/other-info/graphics/larimar-gem_.jpg) |
Specific Gravity |
2.74 - 2.88 |
Chemical Composition |
Hydrated sodium calcium silicate with manganese |
Crystal Structure |
Triclinic |
Calcite |
![Buy calcite at GemSelect](https://www.gemselect.com/other-info/graphics/calcite-cabochon-gem_.jpg) |
Specific Gravity |
2.69 - 2.71 |
Chemical Composition |
Calcium carbonate |
Crystal Structure |
Trigonal |
Aquamarine |
![Buy aquamarine at GemSelect](https://www.gemselect.com/other-info/graphics/aquamarine-rf.jpg) |
Specific Gravity |
2.68 - 2.74 |
Chemical Composition |
Aluminium beryllium silicate |
Crystal Structure |
Hexagonal |
Cat's Eye Aquamarine |
![Buy cat's eye aquamarine at GemSelect](https://www.gemselect.com/other-info/graphics/cats-eye-aquamarine-gem_.jpg) |
Specific Gravity |
2.68 - 2.74 |
Chemical Composition |
Aluminum beryllium silicate |
Crystal Structure |
Hexagonal |
Beryl |
![Buy beryl at GemSelect](https://www.gemselect.com/other-info/graphics/beryl-rf.jpg) |
Specific Gravity |
2.67 - 2.78 |
Chemical Composition |
Aluminium beryllium silicate |
Crystal Structure |
Hexagonal |
Emerald |
![Buy emerald at GemSelect](https://www.gemselect.com/other-info/graphics/emerald-rf.jpg) |
Specific Gravity |
2.67 - 2.78 |
Chemical Composition |
Aluminium beryllium silicate |
Crystal Structure |
Hexagonal |
Goshenite |
![Buy goshenite at GemSelect](https://www.gemselect.com/other-info/graphics/goshenite-gem_.jpg) |
Specific Gravity |
2.66 - 2.87 |
Chemical Composition |
Aluminum beryllium silicate |
Crystal Structure |
Hexagonal |
Andesine Labradorite |
![Buy andesine labradorite at GemSelect](https://www.gemselect.com/other-info/graphics/andesine-rf.jpg) |
Specific Gravity |
2.66 - 2.68 |
Chemical Composition |
Sodium calcium aluminum silicate |
Crystal Structure |
Triclinic |
Morganite |
![Buy morganite at GemSelect](https://www.gemselect.com/other-info/graphics/morganite-rf.jpg) |
Specific Gravity |
2.66 - 2.87 |
Chemical Composition |
Aluminium beryllium silicate |
Crystal Structure |
Hexagonal |
Amethyst |
![Buy amethyst at GemSelect](https://www.gemselect.com/other-info/graphics/amethyst-rf.jpg) |
Specific Gravity |
2.65 |
Chemical Composition |
Silicon dioxide |
Crystal Structure |
Trigonal |
Rose Quartz |
![Buy rose quartz at GemSelect](https://www.gemselect.com/other-info/graphics/rose-quartz-rf.jpg) |
Specific Gravity |
2.65 |
Chemical Composition |
Silicon dioxide |
Crystal Structure |
Trigonal |
Ametrine |
![Buy ametrine at GemSelect](https://www.gemselect.com/other-info/graphics/ametrine-rf.jpg) |
Specific Gravity |
2.65 |
Chemical Composition |
Silicon dioxide |
Crystal Structure |
Trigonal |
Citrine |
![Buy citrine at GemSelect](https://www.gemselect.com/other-info/graphics/citrine-rf.jpg) |
Specific Gravity |
2.65 |
Chemical Composition |
Silicon dioxide |
Crystal Structure |
Hexagonal |
Quartz Cat's Eye |
![Buy quartz cat's eye at GemSelect](https://www.gemselect.com/other-info/graphics/quartz-cats-eye-gem_.jpg) |
Specific Gravity |
2.65 |
Chemical Composition |
Silicon dioxide |
Crystal Structure |
Trigonal |
Rutile Quartz |
![Buy rutile quartz at GemSelect](https://www.gemselect.com/other-info/graphics/rutile-quartz.jpg) |
Specific Gravity |
2.65 |
Chemical Composition |
Silicon dioxide with titanium inclusions |
Crystal Structure |
Trigonal |
Onyx |
![Buy onyx at GemSelect](https://www.gemselect.com/other-info/graphics/onyx-rf.jpg) |
Specific Gravity |
2.65 - 2.91 |
Chemical Composition |
Silicon dioxide |
Crystal Structure |
Trigonal |
Smoky Quartz |
![Buy smoky quartz at GemSelect](https://www.gemselect.com/other-info/graphics/smoky-quartz-rf.jpg) |
Specific Gravity |
2.65 |
Chemical Composition |
Silicon dioxide |
Crystal Structure |
Trigonal |
Strawberry Quartz |
![Buy strawberry quartz at GemSelect](https://www.gemselect.com/other-info/graphics/strawberry-quartz-gem_.jpg) |
Specific Gravity |
2.65 |
Chemical Composition |
Silicon dioxide with iron oxide inclusions |
Crystal Structure |
Trigonal |
Mystic Quartz |
![Buy mystic quartz at GemSelect](https://www.gemselect.com/other-info/graphics/mystic-quartz-gem_.jpg) |
Specific Gravity |
2.65 |
Chemical Composition |
Silicon dioxide |
Crystal Structure |
Trigonal |
Quartz |
![Buy quartz at GemSelect](https://www.gemselect.com/other-info/graphics/quartz-rf.jpg) |
Specific Gravity |
2.65 |
Chemical Composition |
Silicon dioxide |
Crystal Structure |
Trigonal |
Labradorite |
![Buy labradorite at GemSelect](https://www.gemselect.com/other-info/graphics/labradorite-gem_.jpg) |
Specific Gravity |
2.65 - 2.75 |
Chemical Composition |
Sodium calcium aluminum silicate |
Crystal Structure |
Triclinic |
Aventurine |
![Buy aventurine at GemSelect](https://www.gemselect.com/other-info/graphics/aventurine-rf.jpg) |
Specific Gravity |
2.64 - 2.69 |
Chemical Composition |
Silicon dioxide |
Crystal Structure |
Trigonal |
Star Sunstone |
![Buy star sunstone at GemSelect](https://www.gemselect.com/other-info/graphics/star-sunstone-gem_.jpg) |
Specific Gravity |
2.62 - 2.65 |
Chemical Composition |
Sodium calcium aluminum silicate |
Crystal Structure |
Triclinic |
Sunstone |
![Buy sunstone at GemSelect](https://www.gemselect.com/other-info/graphics/sunstone-gem_.jpg) |
Specific Gravity |
2.62 - 2.65 |
Chemical Composition |
Sodium calcium aluminium silicate |
Crystal Structure |
Triclinic |
Pietersite |
![Buy pietersite at GemSelect](https://www.gemselect.com/other-info/graphics/pietersite-gem_.jpg) |
Specific Gravity |
2.6 |
Chemical Composition |
Silicon dioxide |
Crystal Structure |
Aggregate |
Agate |
![Buy agate at GemSelect](https://www.gemselect.com/other-info/graphics/agate-rf.jpg) |
Specific Gravity |
2.6 - 2.64 |
Chemical Composition |
Silicon dioxide |
Crystal Structure |
Trigonal |
Fossil Coral |
![Buy fossil coral at GemSelect](https://www.gemselect.com/other-info/graphics/fossil-coral-gem_.jpg) |
Specific Gravity |
2.6 - 2.7 |
Chemical Composition |
Silicon dioxide |
Crystal Structure |
Trigonal |
Pearl |
![Buy pearl at GemSelect](https://www.gemselect.com/other-info/graphics/pearl-rf.jpg) |
Specific Gravity |
2.6 - 2.85 |
Chemical Composition |
Calcium carbonate |
Crystal Structure |
Orthorhombic |
Coral |
![Buy coral at GemSelect](https://www.gemselect.com/other-info/graphics/coral-gem_.jpg) |
Specific Gravity |
2.6 - 2.7 |
Chemical Composition |
Calcium carbonate |
Crystal Structure |
Trigonal |
Agate Geode |
![Buy agate geode at GemSelect](https://www.gemselect.com/other-info/graphics/agate-geode-gem_.jpg) |
Specific Gravity |
2.6 - 2.64 |
Chemical Composition |
Silicon dioxide |
Crystal Structure |
Trigonal |
Chrysoprase |
![Buy chrysoprase at GemSelect](https://www.gemselect.com/other-info/graphics/chrysoprase-gem_.jpg) |
Specific Gravity |
2.58 - 2.64 |
Chemical Composition |
Silicon dioxide |
Crystal Structure |
Trigonal |
Iolite |
![Buy iolite at GemSelect](https://www.gemselect.com/other-info/graphics/iolite-rf.jpg) |
Specific Gravity |
2.58 - 2.66 |
Chemical Composition |
Magnesium aluminum silicate |
Crystal Structure |
Orthorhombic |
Tiger's Eye Matrix |
![Buy tiger's eye matrix at GemSelect](https://www.gemselect.com/other-info/graphics/tigers-eye-matrix-gem_.jpg) |
Specific Gravity |
2.58 - 2.64 |
Chemical Composition |
Rock containing layers of quartz and iron oxide |
Crystal Structure |
Trigonal |
Dendritic Agate |
![Buy dendritic agate at GemSelect](https://www.gemselect.com/other-info/graphics/dendritic-agate-gem_.jpg) |
Specific Gravity |
2.58 - 2.64 |
Chemical Composition |
Silicon dioxide |
Crystal Structure |
Trigonal |
Fire Agate |
![Buy fire agate at GemSelect](https://www.gemselect.com/other-info/graphics/fire-agate-gem_.jpg) |
Specific Gravity |
2.58 - 2.64 |
Chemical Composition |
Silicon dioxide |
Crystal Structure |
Trigonal |
Chalcedony |
![Buy chalcedony at GemSelect](https://www.gemselect.com/other-info/graphics/chalcedony-rf.jpg) |
Specific Gravity |
2.58 - 2.64 |
Chemical Composition |
Silicon dioxide |
Crystal Structure |
Trigonal |
Star Rose Quartz |
![Buy star rose quartz at GemSelect](https://www.gemselect.com/other-info/graphics/star-rose-quartz-gem_.jpg) |
Specific Gravity |
2.58 - 2.64 |
Chemical Composition |
Silicon dioxide |
Crystal Structure |
Hexagonal |
Peanut Wood |
![Buy peanut wood at GemSelect](https://www.gemselect.com/other-info/graphics/peanut-wood-gem_.jpg) |
Specific Gravity |
2.58 - 2.91 |
Chemical Composition |
Silicon dioxide |
Crystal Structure |
Trigonal |
Carnelian |
![Buy carnelian at GemSelect](https://www.gemselect.com/other-info/graphics/carnelian-gem_.jpg) |
Specific Gravity |
2.58 - 2.64 |
Chemical Composition |
Silicon dioxide |
Crystal Structure |
Trigonal |
Bloodstone |
![Buy bloodstone at GemSelect](https://www.gemselect.com/other-info/graphics/bloodstone-gem_.jpg) |
Specific Gravity |
2.58 - 2.64 |
Chemical Composition |
Silicon dioxide |
Crystal Structure |
Trigonal |
Tiger's Eye |
![Buy tiger's eye at GemSelect](https://www.gemselect.com/other-info/graphics/tigers-eye-rf.jpg) |
Specific Gravity |
2.58 - 2.64 |
Chemical Composition |
Silicon dioxide |
Crystal Structure |
Trigonal |
Scapolite |
![Buy scapolite at GemSelect](https://www.gemselect.com/other-info/graphics/scapolite-gem_.jpg) |
Specific Gravity |
2.57 - 2.74 |
Chemical Composition |
Sodium calcium aluminium silicate |
Crystal Structure |
Tetragonal |
Cat's Eye Scapolite |
![Buy cat's eye scapolite at GemSelect](https://www.gemselect.com/other-info/graphics/cats-eye-scapolite-gem_.jpg) |
Specific Gravity |
2.57 - 2.74 |
Chemical Composition |
Sodium calcium aluminum silicate |
Crystal Structure |
Tetragonal |
Amazonite |
![Buy amazonite at GemSelect](https://www.gemselect.com/other-info/graphics/amazonite-rf.jpg) |
Specific Gravity |
2.56 - 2.58 |
Chemical Composition |
Potassium aluminum silicate |
Crystal Structure |
Triclinic |
Orthoclase |
![Buy orthoclase at GemSelect](https://www.gemselect.com/other-info/graphics/orthoclase-rf.jpg) |
Specific Gravity |
2.56 - 2.58 |
Chemical Composition |
Potassium aluminum silicate |
Crystal Structure |
Monoclinic |
Rainbow Moonstone |
![Buy rainbow moonstone at GemSelect](https://www.gemselect.com/other-info/graphics/rainbow-moonstone-gem_.jpg) |
Specific Gravity |
2.56 - 2.59 |
Chemical Composition |
Potassium aluminum silicate |
Crystal Structure |
Monoclinic |
Star Moonstone |
![Buy star moonstone at GemSelect](https://www.gemselect.com/other-info/graphics/star-moonstone-gem_.jpg) |
Specific Gravity |
2.56 - 2.59 |
Chemical Composition |
Potassium aluminum silicate |
Crystal Structure |
Monoclinic |
Moonstone |
![Buy moonstone at GemSelect](https://www.gemselect.com/other-info/graphics/moonstone-rf.jpg) |
Specific Gravity |
2.56 - 2.59 |
Chemical Composition |
Potassium aluminum silicate |
Crystal Structure |
Monoclinic |
Seraphinite |
![Buy seraphinite at GemSelect](https://www.gemselect.com/other-info/graphics/seraphinite-rf.jpg) |
Specific Gravity |
2.55 - 2.75 |
Chemical Composition |
Magnesium iron aluminum silicate hyroxide |
Crystal Structure |
Monoclinic |
Charoite |
![Buy charoite at GemSelect](https://www.gemselect.com/other-info/graphics/charoite-gem_.jpg) |
Specific Gravity |
2.54 - 2.78 |
Chemical Composition |
Complex silicate containing phosphorus, calcium and sodium |
Crystal Structure |
Monoclinic |
Lapis Lazuli |
![Buy lapis lazuli at GemSelect](https://www.gemselect.com/other-info/graphics/lapis-lazuli-rf.jpg) |
Specific Gravity |
2.5 - 3 |
Chemical Composition |
Sodium calcium aluminum silicate |
Crystal Structure |
Cubic |
Maw-Sit-Sit |
![Buy maw-sit-sit at GemSelect](https://www.gemselect.com/other-info/graphics/maw-sit-sit-gem_.jpg) |
Specific Gravity |
2.5 - 3.5 |
Chemical Composition |
Rock containing variable amounts of kosmochlor, jadeite and albite |
Crystal Structure |
Monoclinic, prismatic |
Jasper |
![Buy jasper at GemSelect](https://www.gemselect.com/other-info/graphics/jasper-rf.jpg) |
Specific Gravity |
2.5 - 2.9 |
Chemical Composition |
Silicon dioxide |
Crystal Structure |
Trigonal |
Howlite |
![Buy howlite at GemSelect](https://www.gemselect.com/other-info/graphics/howlite-gem_.jpg) |
Specific Gravity |
2.45 - 2.58 |
Chemical Composition |
Calcium borosilicate hydroxide |
Crystal Structure |
Monoclinic |
Serpentine |
![Buy serpentine at GemSelect](https://www.gemselect.com/other-info/graphics/serpentine-gem_.jpg) |
Specific Gravity |
2.44 - 2.62 |
Chemical Composition |
Basic magnesium silicate |
Crystal Structure |
Microcrystalline |
Variscite |
![Buy variscite at GemSelect](https://www.gemselect.com/other-info/graphics/variscite-gem_.jpg) |
Specific Gravity |
2.42 - 2.58 |
Chemical Composition |
Hydrous aluminum phosphate |
Crystal Structure |
Orthorhombic |
Hambergite |
![Buy hambergite at GemSelect](https://www.gemselect.com/other-info/graphics/hambergite-gemstone_.jpg) |
Specific Gravity |
2.35 |
Chemical Composition |
Beryllium borate |
Crystal Structure |
Orthorhombic |
Obsidian |
![Buy obsidian at GemSelect](https://www.gemselect.com/other-info/graphics/obsidian-rf.jpg) |
Specific Gravity |
2.35 - 2.6 |
Chemical Composition |
Siliceous glassy rock |
Crystal Structure |
Amorphous |
Snowflake Obsidian |
![Buy snowflake obsidian at GemSelect](https://www.gemselect.com/other-info/graphics/snowflake-obsidian-rf.jpg) |
Specific Gravity |
2.35 - 2.6 |
Chemical Composition |
Siliceous glassy rock |
Crystal Structure |
Amorphous |
Moldavite |
![Buy moldavite at GemSelect](https://www.gemselect.com/other-info/graphics/moldavite-gemstone_.jpg) |
Specific Gravity |
2.32 - 2.38 |
Chemical Composition |
Silicon dioxide + aluminum oxide |
Crystal Structure |
Amorphous |
Turquoise |
![Buy turquoise at GemSelect](https://www.gemselect.com/other-info/graphics/turquoise-rf.jpg) |
Specific Gravity |
2.31 - 2.84 |
Chemical Composition |
Hydrated copper aluminum phosphate |
Crystal Structure |
Triclinic |
Rubellite Tourmaline |
![Buy rubellite tourmaline at GemSelect](https://www.gemselect.com/other-info/graphics/rubellite-tourmaline-gem_.jpg) |
Specific Gravity |
2.28 - 3.32 |
Chemical Composition |
Silicate compounded with aluminium, iron, magnesium, sodium, lithium or potassium |
Crystal Structure |
Trigonal |
Sodalite |
![Buy sodalite at GemSelect](https://www.gemselect.com/other-info/graphics/sodalite-gem_.jpg) |
Specific Gravity |
2.27 - 2.33 |
Chemical Composition |
Sodium aluminum silicate chloride |
Crystal Structure |
Cubic |
Hackmanite |
![Buy hackmanite at GemSelect](https://www.gemselect.com/other-info/graphics/hackmanite-gemstone_.jpg) |
Specific Gravity |
2.14 - 2.4 |
Chemical Composition |
Sodium aluminum silicate chloride |
Crystal Structure |
Cubic |
Opal Doublet |
![Buy opal doublet at GemSelect](https://www.gemselect.com/other-info/graphics/opal-doublet-gem_.jpg) |
Specific Gravity |
1.98 - 2.5 |
Chemical Composition |
Hydrous silicon dioxide |
Crystal Structure |
Amorphous |
Fire Opal |
![Buy fire opal at GemSelect](https://www.gemselect.com/other-info/graphics/fire-opal-rf.jpg) |
Specific Gravity |
1.98 - 2.5 |
Chemical Composition |
Hydrous silicon dioxide |
Crystal Structure |
Amorphous |
Moss Opal |
![Buy moss opal at GemSelect](https://www.gemselect.com/other-info/graphics/moss-opal-rf.jpg) |
Specific Gravity |
1.98 - 2.5 |
Chemical Composition |
Hydrous silicon dioxide |
Crystal Structure |
Amorphous |
Opal |
![Buy opal at GemSelect](https://www.gemselect.com/other-info/graphics/opal-rf.jpg) |
Specific Gravity |
1.98 - 2.5 |
Chemical Composition |
Hydrous silicon dioxide |
Crystal Structure |
Amorphous |
Boulder Opal |
![Buy boulder opal at GemSelect](https://www.gemselect.com/other-info/graphics/boulder-opal-rf.jpg) |
Specific Gravity |
1.98 - 2.5 |
Chemical Composition |
Hydrous silicon dioxide |
Crystal Structure |
Amorphous |
Chrysocolla |
![Buy chrysocolla at GemSelect](https://www.gemselect.com/other-info/graphics/chrysocolla-gem_.jpg) |
Specific Gravity |
1.9 - 2.4 |
Chemical Composition |
Hydrous copper silicate |
Crystal Structure |
Monoclinic |
Amber |
![Buy amber at GemSelect](https://www.gemselect.com/other-info/graphics/amber-gem_.jpg) |
Specific Gravity |
1.05 - 1.1 |
Chemical Composition |
Oxygenated hydrocarbon (variable) |
Crystal Structure |
Amorphous |