☘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 |
 |
Specific Gravity |
6.7 - 7.1 |
| Chemical Composition |
Tin oxide |
| Crystal Structure |
Tetragonal |
| Hematite |
 |
Specific Gravity |
5.12 - 5.28 |
| Chemical Composition |
Iron oxide |
| Crystal Structure |
Trigonal |
| Rainbow Pyrite |
 |
Specific Gravity |
5 - 5.2 |
| Chemical Composition |
Cubic |
| Crystal Structure |
Iron sulphide |
| Spessartite Garnet |
 |
Specific Gravity |
4.12 - 4.18 |
| Chemical Composition |
Manganese aluminium silicate |
| Crystal Structure |
Cubic |
| Smithsonite |
 |
Specific Gravity |
4 - 4.65 |
| Chemical Composition |
Zinc carbonate |
| Crystal Structure |
Trigonal |
| Star Ruby |
 |
Specific Gravity |
3.97 - 4.05 |
| Chemical Composition |
Aluminum oxide |
| Crystal Structure |
Trigonal |
| Ruby |
 |
Specific Gravity |
3.97 - 4.05 |
| Chemical Composition |
Aluminum oxide |
| Crystal Structure |
Trigonal |
| Color Change Sapphire |
 |
Specific Gravity |
3.95 - 4.03 |
| Chemical Composition |
Aluminum oxide |
| Crystal Structure |
Trigonal |
| Sapphire |
 |
Specific Gravity |
3.95 - 4.03 |
| Chemical Composition |
Aluminum oxide |
| Crystal Structure |
Trigonal |
| Star Sapphire |
 |
Specific Gravity |
3.95 - 4.03 |
| Chemical Composition |
Aluminium oxide |
| Crystal Structure |
Trigonal |
| Almandine Garnet |
 |
Specific Gravity |
3.93 - 4.3 |
| Chemical Composition |
Iron aluminium silicate |
| Crystal Structure |
Cubic |
| Zircon |
 |
Specific Gravity |
3.93 - 4.73 |
| Chemical Composition |
Zirconium silicate |
| Crystal Structure |
Tetragonal |
| Sphalerite |
 |
Specific Gravity |
3.9 - 4.1 |
| Chemical Composition |
Zinc sulphide |
| Crystal Structure |
Cubic |
| Rhodolite Garnet |
 |
Specific Gravity |
3.85 |
| Chemical Composition |
Magnesium aluminum silicate |
| Crystal Structure |
Cubic |
| Gaspeite |
 |
Specific Gravity |
3.71 |
| Chemical Composition |
Nickel magnesium iron carbonate |
| Crystal Structure |
Trigonal |
| Melanite |
 |
Specific Gravity |
3.7 - 4.1 |
| Chemical Composition |
Calcium iron silicate |
| Crystal Structure |
Cubic |
| Chrysoberyl Cat's Eye |
 |
Specific Gravity |
3.7 - 3.78 |
| Chemical Composition |
Beryllium aluminium oxide |
| Crystal Structure |
Orthorhombic |
| Alexandrite |
 |
Specific Gravity |
3.7 - 3.78 |
| Chemical Composition |
Beryllium aluminum oxide |
| Crystal Structure |
Orthorhombic |
| Azurite |
 |
Specific Gravity |
3.7 - 3.9 |
| Chemical Composition |
Basic Copper Carbonate |
| Crystal Structure |
Monoclinic |
| Demantoid Garnet |
 |
Specific Gravity |
3.7 - 4.1 |
| Chemical Composition |
Calcium iron silicate |
| Crystal Structure |
Cubic |
| Chrysoberyl |
 |
Specific Gravity |
3.7 - 3.78 |
| Chemical Composition |
Beryllium aluminium oxide |
| Crystal Structure |
Orthorhombic |
| Hessonite Garnet |
 |
Specific Gravity |
3.64 - 3.69 |
| Chemical Composition |
Calcium aluminum silicate |
| Crystal Structure |
Cubic |
| Color-Change Garnet |
 |
Specific Gravity |
3.62 - 3.87 |
| Chemical Composition |
Magnesium aluminum silicate |
| Crystal Structure |
Cubic |
| Pyrope Garnet |
 |
Specific Gravity |
3.62 - 3.87 |
| Chemical Composition |
Magnesiium aluminum silicate |
| Crystal Structure |
Cubic |
| Star Garnet |
 |
Specific Gravity |
3.62 - 3.87 |
| Chemical Composition |
Iron aluminum silicate |
| Crystal Structure |
Rhombic |
| Grossularite Garnet |
 |
Specific Gravity |
3.57 - 3.73 |
| Chemical Composition |
Calcium aluminum silicate |
| Crystal Structure |
Cubic |
| Mali Garnet |
 |
Specific Gravity |
3.57 - 3.73 |
| Chemical Composition |
Calcium aluminum silicate |
| Crystal Structure |
Cubic |
| Tsavorite Garnet |
 |
Specific Gravity |
3.57 - 3.73 |
| Chemical Composition |
Calcium aluminum silicate |
| Crystal Structure |
Rhombic |
| Spinel |
 |
Specific Gravity |
3.54 - 3.63 |
| Chemical Composition |
Magnesium aluminium oxide |
| Crystal Structure |
Cubic |
| Kyanite |
 |
Specific Gravity |
3.53 - 3.7 |
| Chemical Composition |
Aluminum silicate |
| Crystal Structure |
Triclinic |
| Sphene |
 |
Specific Gravity |
3.52 - 3.54 |
| Chemical Composition |
Calcium titanium silicate |
| Crystal Structure |
Monoclinic |
| Diamond |
 |
Specific Gravity |
3.5 - 3.53 |
| Chemical Composition |
Carbon |
| Crystal Structure |
Cubic |
| Topaz |
 |
Specific Gravity |
3.49 - 3.57 |
| Chemical Composition |
Aluminum fluosilicate |
| Crystal Structure |
Orthorhombic |
| Mystic Topaz |
 |
Specific Gravity |
3.49 - 3.57 |
| Chemical Composition |
Aluminum fluosilicate |
| Crystal Structure |
Orthorhombic |
| Imperial Topaz |
 |
Specific Gravity |
3.49 - 3.57 |
| Chemical Composition |
Aluminum fluosilicate |
| Crystal Structure |
Orthorhombic |
| Azotic Topaz |
 |
Specific Gravity |
3.49 - 3.57 |
| Chemical Composition |
Aluminum fluosilicate |
| Crystal Structure |
Orthorhombic |
| Rutile Topaz |
 |
Specific Gravity |
3.49 - 3.57 |
| Chemical Composition |
Aluminum fluorsilicate |
| Crystal Structure |
Orthorhombic |
| Rhodochrosite |
 |
Specific Gravity |
3.45 - 3.7 |
| Chemical Composition |
Manganese carbonate |
| Crystal Structure |
Trigonal |
| Rhodonite |
 |
Specific Gravity |
3.4 - 3.74 |
| Chemical Composition |
Manganese silicate |
| Crystal Structure |
Triclinic |
| Ruby in Zoisite |
 |
Specific Gravity |
3.35 |
| Chemical Composition |
Rock containing zoisite, ruby and hornblende |
| Crystal Structure |
Orthorhombic |
| Tanzanite |
 |
Specific Gravity |
3.35 |
| Chemical Composition |
Calcium aluminium silicate |
| Crystal Structure |
Orthorhombic |
| Idocrase |
 |
Specific Gravity |
3.32 - 3.47 |
| Chemical Composition |
Complex calcium aluminum silicate |
| Crystal Structure |
Tetragonal |
| Cat's Eye Diaspore |
 |
Specific Gravity |
3.3 - 3.39 |
| Chemical Composition |
Hydrated aluminum oxide |
| Crystal Structure |
Orthorhombic |
| Hemimorphite |
 |
Specific Gravity |
3.3 - 3.5 |
| Chemical Composition |
Hydrous basic zinc silicate |
| Crystal Structure |
Orthorhombic |
| Color Change Diaspore |
 |
Specific Gravity |
3.3 - 3.39 |
| Chemical Composition |
Hydrated aluminum oxide |
| Crystal Structure |
Orthorhombic |
| Peridot |
 |
Specific Gravity |
3.28 - 3.48 |
| Chemical Composition |
Magnesium iron silicate |
| Crystal Structure |
Orthorhombic |
| Axinite |
 |
Specific Gravity |
3.26 - 3.36 |
| Chemical Composition |
Calcium aluminum borate silicate |
| Crystal Structure |
Triclinic |
| Dumortierite Quartz |
 |
Specific Gravity |
3.26 - 3.41 |
| Chemical Composition |
Aluminum borate silicate intergrown with quartz |
| Crystal Structure |
Orthorhombic |
| Malachite |
 |
Specific Gravity |
3.25 - 4.1 |
| Chemical Composition |
Basic copper carbonate |
| Crystal Structure |
Monoclinic |
| Sillimanite Cat's Eye |
 |
Specific Gravity |
3.23 |
| Chemical Composition |
Aluminum silicate |
| Crystal Structure |
Orthorhombic |
| Chrome Diopside |
 |
Specific Gravity |
3.22 - 3.38 |
| Chemical Composition |
Calcium magnesium silicate |
| Crystal Structure |
Monoclinic |
| Tashmarine Diopside |
 |
Specific Gravity |
3.22 - 3.38 |
| Chemical Composition |
Calcium magnesium silicate |
| Crystal Structure |
Monoclinic |
| Star Diopside |
 |
Specific Gravity |
3.22 - 3.38 |
| Chemical Composition |
Calcium manganese silicate |
| Crystal Structure |
Monoclinic |
| Hiddenite |
 |
Specific Gravity |
3.17 - 3.19 |
| Chemical Composition |
Lithium aluminum silicate |
| Crystal Structure |
Monoclinic |
| Apatite |
 |
Specific Gravity |
3.16 - 3.23 |
| Chemical Composition |
Basic fluoro- and chloro-calicum phosphate |
| Crystal Structure |
Hexagonal |
| Cat's Eye Apatite |
 |
Specific Gravity |
3.16 - 3.23 |
| Chemical Composition |
Basic fluoro- and chloro-calicum phosphate |
| Crystal Structure |
Hexagonal |
| Spodumene |
 |
Specific Gravity |
3.15 - 3.21 |
| Chemical Composition |
Lithium aluminum silicate |
| Crystal Structure |
Monoclinic |
| Kunzite |
 |
Specific Gravity |
3.15 - 3.21 |
| Chemical Composition |
Lithium aluminum silicate |
| Crystal Structure |
Monoclinic |
| Clinohumite |
 |
Specific Gravity |
3.13 - 3.75 |
| Chemical Composition |
Magnesium silicate |
| Crystal Structure |
Monoclinic |
| Andalusite |
 |
Specific Gravity |
3.05 - 3.2 |
| Chemical Composition |
Aluminium silicate |
| Crystal Structure |
Orthorhombic |
| Fluorite |
 |
Specific Gravity |
3 - 3.25 |
| Chemical Composition |
Calcium fluoride |
| Crystal Structure |
Cubic |
| Nuummite |
 |
Specific Gravity |
3 |
| Chemical Composition |
Rock containing gedrite and anthophyllite |
| Crystal Structure |
Lamellar fibrous structure |
| Danburite |
 |
Specific Gravity |
2.97 - 3.03 |
| Chemical Composition |
Calcium boric silicate |
| Crystal Structure |
Orthorhombic |
| Jadeite |
 |
Specific Gravity |
2.9 - 3.03 |
| Chemical Composition |
Basic calcium magnesium iron silicate |
| Crystal Structure |
Monoclinic |
| Nephrite Jade |
 |
Specific Gravity |
2.9 - 3.03 |
| Chemical Composition |
Calcium magnesium iron silicate |
| Crystal Structure |
Monoclinic |
| Tourmaline |
 |
Specific Gravity |
2.83 - 3.32 |
| Chemical Composition |
Silicate compounded with aluminium, iron, magnesium, sodium, lithium or potassium |
| Crystal Structure |
Trigonal |
| Chrome Tourmaline |
 |
Specific Gravity |
2.82 - 3.32 |
| Chemical Composition |
Silicate compounded with aluminium, iron, magnesium, sodium, lithium or potassium |
| Crystal Structure |
Trigonal |
| Prehnite |
 |
Specific Gravity |
2.82 - 2.94 |
| Chemical Composition |
Basic calcium aluminum silicate |
| Crystal Structure |
Orthorhombic |
| Paraiba Tourmaline |
 |
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 |
 |
Specific Gravity |
2.82 - 3.32 |
| Chemical Composition |
Silicate compounded with aluminium, iron, magnesium, sodium, lithium or potassium |
| Crystal Structure |
Trigonal |
| Lepidolite |
 |
Specific Gravity |
2.8 - 2.9 |
| Chemical Composition |
Potassium lithium aluminum fluoro-silicate |
| Crystal Structure |
Monoclinic |
| Verdite |
 |
Specific Gravity |
2.76 - 3 |
| Chemical Composition |
Serpentine rock |
| Crystal Structure |
Monoclinic |
| Sugilite |
 |
Specific Gravity |
2.76 - 2.8 |
| Chemical Composition |
Potassium sodium lithium iron manganese aluminium |
| Crystal Structure |
Hexagonal |
| Ammolite |
 |
Specific Gravity |
2.75 - 2.8 |
| Chemical Composition |
Mainly aragonite (with calcite, silica and pyrite) |
| Crystal Structure |
Amorphous |
| Larimar |
 |
Specific Gravity |
2.74 - 2.88 |
| Chemical Composition |
Hydrated sodium calcium silicate with manganese |
| Crystal Structure |
Triclinic |
| Calcite |
 |
Specific Gravity |
2.69 - 2.71 |
| Chemical Composition |
Calcium carbonate |
| Crystal Structure |
Trigonal |
| Aquamarine |
 |
Specific Gravity |
2.68 - 2.74 |
| Chemical Composition |
Aluminium beryllium silicate |
| Crystal Structure |
Hexagonal |
| Cat's Eye Aquamarine |
 |
Specific Gravity |
2.68 - 2.74 |
| Chemical Composition |
Aluminum beryllium silicate |
| Crystal Structure |
Hexagonal |
| Beryl |
 |
Specific Gravity |
2.67 - 2.78 |
| Chemical Composition |
Aluminium beryllium silicate |
| Crystal Structure |
Hexagonal |
| Emerald |
 |
Specific Gravity |
2.67 - 2.78 |
| Chemical Composition |
Aluminium beryllium silicate |
| Crystal Structure |
Hexagonal |
| Goshenite |
 |
Specific Gravity |
2.66 - 2.87 |
| Chemical Composition |
Aluminum beryllium silicate |
| Crystal Structure |
Hexagonal |
| Andesine Labradorite |
 |
Specific Gravity |
2.66 - 2.68 |
| Chemical Composition |
Sodium calcium aluminum silicate |
| Crystal Structure |
Triclinic |
| Morganite |
 |
Specific Gravity |
2.66 - 2.87 |
| Chemical Composition |
Aluminium beryllium silicate |
| Crystal Structure |
Hexagonal |
| Amethyst |
 |
Specific Gravity |
2.65 |
| Chemical Composition |
Silicon dioxide |
| Crystal Structure |
Trigonal |
| Rose Quartz |
 |
Specific Gravity |
2.65 |
| Chemical Composition |
Silicon dioxide |
| Crystal Structure |
Trigonal |
| Ametrine |
 |
Specific Gravity |
2.65 |
| Chemical Composition |
Silicon dioxide |
| Crystal Structure |
Trigonal |
| Citrine |
 |
Specific Gravity |
2.65 |
| Chemical Composition |
Silicon dioxide |
| Crystal Structure |
Hexagonal |
| Quartz Cat's Eye |
 |
Specific Gravity |
2.65 |
| Chemical Composition |
Silicon dioxide |
| Crystal Structure |
Trigonal |
| Rutile Quartz |
 |
Specific Gravity |
2.65 |
| Chemical Composition |
Silicon dioxide with titanium inclusions |
| Crystal Structure |
Trigonal |
| Onyx |
 |
Specific Gravity |
2.65 - 2.91 |
| Chemical Composition |
Silicon dioxide |
| Crystal Structure |
Trigonal |
| Smoky Quartz |
 |
Specific Gravity |
2.65 |
| Chemical Composition |
Silicon dioxide |
| Crystal Structure |
Trigonal |
| Strawberry Quartz |
 |
Specific Gravity |
2.65 |
| Chemical Composition |
Silicon dioxide with iron oxide inclusions |
| Crystal Structure |
Trigonal |
| Mystic Quartz |
 |
Specific Gravity |
2.65 |
| Chemical Composition |
Silicon dioxide |
| Crystal Structure |
Trigonal |
| Quartz |
 |
Specific Gravity |
2.65 |
| Chemical Composition |
Silicon dioxide |
| Crystal Structure |
Trigonal |
| Labradorite |
 |
Specific Gravity |
2.65 - 2.75 |
| Chemical Composition |
Sodium calcium aluminum silicate |
| Crystal Structure |
Triclinic |
| Aventurine |
 |
Specific Gravity |
2.64 - 2.69 |
| Chemical Composition |
Silicon dioxide |
| Crystal Structure |
Trigonal |
| Star Sunstone |
 |
Specific Gravity |
2.62 - 2.65 |
| Chemical Composition |
Sodium calcium aluminum silicate |
| Crystal Structure |
Triclinic |
| Sunstone |
 |
Specific Gravity |
2.62 - 2.65 |
| Chemical Composition |
Sodium calcium aluminium silicate |
| Crystal Structure |
Triclinic |
| Pietersite |
 |
Specific Gravity |
2.6 |
| Chemical Composition |
Silicon dioxide |
| Crystal Structure |
Aggregate |
| Agate |
 |
Specific Gravity |
2.6 - 2.64 |
| Chemical Composition |
Silicon dioxide |
| Crystal Structure |
Trigonal |
| Fossil Coral |
 |
Specific Gravity |
2.6 - 2.7 |
| Chemical Composition |
Silicon dioxide |
| Crystal Structure |
Trigonal |
| Pearl |
 |
Specific Gravity |
2.6 - 2.85 |
| Chemical Composition |
Calcium carbonate |
| Crystal Structure |
Orthorhombic |
| Coral |
 |
Specific Gravity |
2.6 - 2.7 |
| Chemical Composition |
Calcium carbonate |
| Crystal Structure |
Trigonal |
| Agate Geode |
 |
Specific Gravity |
2.6 - 2.64 |
| Chemical Composition |
Silicon dioxide |
| Crystal Structure |
Trigonal |
| Chrysoprase |
 |
Specific Gravity |
2.58 - 2.64 |
| Chemical Composition |
Silicon dioxide |
| Crystal Structure |
Trigonal |
| Iolite |
 |
Specific Gravity |
2.58 - 2.66 |
| Chemical Composition |
Magnesium aluminum silicate |
| Crystal Structure |
Orthorhombic |
| Tiger's Eye Matrix |
 |
Specific Gravity |
2.58 - 2.64 |
| Chemical Composition |
Rock containing layers of quartz and iron oxide |
| Crystal Structure |
Trigonal |
| Dendritic Agate |
 |
Specific Gravity |
2.58 - 2.64 |
| Chemical Composition |
Silicon dioxide |
| Crystal Structure |
Trigonal |
| Fire Agate |
 |
Specific Gravity |
2.58 - 2.64 |
| Chemical Composition |
Silicon dioxide |
| Crystal Structure |
Trigonal |
| Chalcedony |
 |
Specific Gravity |
2.58 - 2.64 |
| Chemical Composition |
Silicon dioxide |
| Crystal Structure |
Trigonal |
| Star Rose Quartz |
 |
Specific Gravity |
2.58 - 2.64 |
| Chemical Composition |
Silicon dioxide |
| Crystal Structure |
Hexagonal |
| Peanut Wood |
 |
Specific Gravity |
2.58 - 2.91 |
| Chemical Composition |
Silicon dioxide |
| Crystal Structure |
Trigonal |
| Carnelian |
 |
Specific Gravity |
2.58 - 2.64 |
| Chemical Composition |
Silicon dioxide |
| Crystal Structure |
Trigonal |
| Bloodstone |
 |
Specific Gravity |
2.58 - 2.64 |
| Chemical Composition |
Silicon dioxide |
| Crystal Structure |
Trigonal |
| Tiger's Eye |
 |
Specific Gravity |
2.58 - 2.64 |
| Chemical Composition |
Silicon dioxide |
| Crystal Structure |
Trigonal |
| Scapolite |
 |
Specific Gravity |
2.57 - 2.74 |
| Chemical Composition |
Sodium calcium aluminium silicate |
| Crystal Structure |
Tetragonal |
| Cat's Eye Scapolite |
 |
Specific Gravity |
2.57 - 2.74 |
| Chemical Composition |
Sodium calcium aluminum silicate |
| Crystal Structure |
Tetragonal |
| Amazonite |
 |
Specific Gravity |
2.56 - 2.58 |
| Chemical Composition |
Potassium aluminum silicate |
| Crystal Structure |
Triclinic |
| Orthoclase |
 |
Specific Gravity |
2.56 - 2.58 |
| Chemical Composition |
Potassium aluminum silicate |
| Crystal Structure |
Monoclinic |
| Rainbow Moonstone |
 |
Specific Gravity |
2.56 - 2.59 |
| Chemical Composition |
Potassium aluminum silicate |
| Crystal Structure |
Monoclinic |
| Star Moonstone |
 |
Specific Gravity |
2.56 - 2.59 |
| Chemical Composition |
Potassium aluminum silicate |
| Crystal Structure |
Monoclinic |
| Moonstone |
 |
Specific Gravity |
2.56 - 2.59 |
| Chemical Composition |
Potassium aluminum silicate |
| Crystal Structure |
Monoclinic |
| Seraphinite |
 |
Specific Gravity |
2.55 - 2.75 |
| Chemical Composition |
Magnesium iron aluminum silicate hyroxide |
| Crystal Structure |
Monoclinic |
| Charoite |
 |
Specific Gravity |
2.54 - 2.78 |
| Chemical Composition |
Complex silicate containing phosphorus, calcium and sodium |
| Crystal Structure |
Monoclinic |
| Lapis Lazuli |
 |
Specific Gravity |
2.5 - 3 |
| Chemical Composition |
Sodium calcium aluminum silicate |
| Crystal Structure |
Cubic |
| Maw-Sit-Sit |
 |
Specific Gravity |
2.5 - 3.5 |
| Chemical Composition |
Rock containing variable amounts of kosmochlor, jadeite and albite |
| Crystal Structure |
Monoclinic, prismatic |
| Jasper |
 |
Specific Gravity |
2.5 - 2.9 |
| Chemical Composition |
Silicon dioxide |
| Crystal Structure |
Trigonal |
| Howlite |
 |
Specific Gravity |
2.45 - 2.58 |
| Chemical Composition |
Calcium borosilicate hydroxide |
| Crystal Structure |
Monoclinic |
| Serpentine |
 |
Specific Gravity |
2.44 - 2.62 |
| Chemical Composition |
Basic magnesium silicate |
| Crystal Structure |
Microcrystalline |
| Variscite |
 |
Specific Gravity |
2.42 - 2.58 |
| Chemical Composition |
Hydrous aluminum phosphate |
| Crystal Structure |
Orthorhombic |
| Hambergite |
 |
Specific Gravity |
2.35 |
| Chemical Composition |
Beryllium borate |
| Crystal Structure |
Orthorhombic |
| Obsidian |
 |
Specific Gravity |
2.35 - 2.6 |
| Chemical Composition |
Siliceous glassy rock |
| Crystal Structure |
Amorphous |
| Snowflake Obsidian |
 |
Specific Gravity |
2.35 - 2.6 |
| Chemical Composition |
Siliceous glassy rock |
| Crystal Structure |
Amorphous |
| Moldavite |
 |
Specific Gravity |
2.32 - 2.38 |
| Chemical Composition |
Silicon dioxide + aluminum oxide |
| Crystal Structure |
Amorphous |
| Turquoise |
 |
Specific Gravity |
2.31 - 2.84 |
| Chemical Composition |
Hydrated copper aluminum phosphate |
| Crystal Structure |
Triclinic |
| Rubellite Tourmaline |
 |
Specific Gravity |
2.28 - 3.32 |
| Chemical Composition |
Silicate compounded with aluminium, iron, magnesium, sodium, lithium or potassium |
| Crystal Structure |
Trigonal |
| Sodalite |
 |
Specific Gravity |
2.27 - 2.33 |
| Chemical Composition |
Sodium aluminum silicate chloride |
| Crystal Structure |
Cubic |
| Hackmanite |
 |
Specific Gravity |
2.14 - 2.4 |
| Chemical Composition |
Sodium aluminum silicate chloride |
| Crystal Structure |
Cubic |
| Opal Doublet |
 |
Specific Gravity |
1.98 - 2.5 |
| Chemical Composition |
Hydrous silicon dioxide |
| Crystal Structure |
Amorphous |
| Fire Opal |
 |
Specific Gravity |
1.98 - 2.5 |
| Chemical Composition |
Hydrous silicon dioxide |
| Crystal Structure |
Amorphous |
| Moss Opal |
 |
Specific Gravity |
1.98 - 2.5 |
| Chemical Composition |
Hydrous silicon dioxide |
| Crystal Structure |
Amorphous |
| Opal |
 |
Specific Gravity |
1.98 - 2.5 |
| Chemical Composition |
Hydrous silicon dioxide |
| Crystal Structure |
Amorphous |
| Boulder Opal |
 |
Specific Gravity |
1.98 - 2.5 |
| Chemical Composition |
Hydrous silicon dioxide |
| Crystal Structure |
Amorphous |
| Chrysocolla |
 |
Specific Gravity |
1.9 - 2.4 |
| Chemical Composition |
Hydrous copper silicate |
| Crystal Structure |
Monoclinic |
| Amber |
 |
Specific Gravity |
1.05 - 1.1 |
| Chemical Composition |
Oxygenated hydrocarbon (variable) |
| Crystal Structure |
Amorphous |
