☘Диаграмма Удельного Веса драгоценных камней.

26 мая 2018

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 Specific Gravity 6.7 - 7.1
Chemical Composition Tin oxide
Crystal Structure Tetragonal
Hematite
Buy hematite at GemSelect Specific Gravity 5.12 - 5.28
Chemical Composition Iron oxide
Crystal Structure Trigonal 
Rainbow Pyrite
Buy rainbow pyrite at GemSelect Specific Gravity 5 - 5.2
Chemical Composition Cubic
Crystal Structure Iron sulphide 
Spessartite Garnet
Buy spessartite garnet at GemSelect Specific Gravity 4.12 - 4.18
Chemical Composition Manganese aluminium silicate
Crystal Structure Cubic 
Smithsonite
Buy smithsonite at GemSelect Specific Gravity 4 - 4.65
Chemical Composition Zinc carbonate
Crystal Structure Trigonal 
Star Ruby
Buy star ruby at GemSelect Specific Gravity 3.97 - 4.05
Chemical Composition Aluminum oxide
Crystal Structure Trigonal 
Ruby
Buy ruby at GemSelect Specific Gravity 3.97 - 4.05
Chemical Composition Aluminum oxide
Crystal Structure Trigonal 
Color Change Sapphire
Buy color change sapphire at GemSelect Specific Gravity 3.95 - 4.03
Chemical Composition Aluminum oxide
Crystal Structure Trigonal 
Sapphire
Buy sapphire at GemSelect Specific Gravity 3.95 - 4.03
Chemical Composition Aluminum oxide
Crystal Structure Trigonal 
Star Sapphire
Buy star sapphire at GemSelect Specific Gravity 3.95 - 4.03
Chemical Composition Aluminium oxide
Crystal Structure Trigonal 
Almandine Garnet
Buy almandine garnet at GemSelect Specific Gravity 3.93 - 4.3
Chemical Composition Iron aluminium silicate
Crystal Structure Cubic 
Zircon
Buy zircon at GemSelect Specific Gravity 3.93 - 4.73
Chemical Composition Zirconium silicate
Crystal Structure Tetragonal 
Sphalerite
Buy sphalerite at GemSelect Specific Gravity 3.9 - 4.1
Chemical Composition Zinc sulphide
Crystal Structure Cubic 
Rhodolite Garnet
Buy rhodolite garnet at GemSelect Specific Gravity 3.85
Chemical Composition Magnesium aluminum silicate
Crystal Structure Cubic 
Gaspeite
Buy gaspeite at GemSelect Specific Gravity 3.71
Chemical Composition Nickel magnesium iron carbonate
Crystal Structure Trigonal 
Melanite
Buy melanite at GemSelect 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 Specific Gravity 3.7 - 3.78
Chemical Composition Beryllium aluminium oxide
Crystal Structure Orthorhombic 
Alexandrite
Buy alexandrite at GemSelect Specific Gravity 3.7 - 3.78
Chemical Composition Beryllium aluminum oxide
Crystal Structure Orthorhombic 
Azurite
Buy azurite at GemSelect Specific Gravity 3.7 - 3.9
Chemical Composition Basic Copper Carbonate
Crystal Structure Monoclinic 
Demantoid Garnet
Buy demantoid garnet at GemSelect Specific Gravity 3.7 - 4.1
Chemical Composition Calcium iron silicate
Crystal Structure Cubic 
Chrysoberyl
Buy chrysoberyl at GemSelect Specific Gravity 3.7 - 3.78
Chemical Composition Beryllium aluminium oxide
Crystal Structure Orthorhombic 
Hessonite Garnet
Buy hessonite garnet at GemSelect Specific Gravity 3.64 - 3.69
Chemical Composition Calcium aluminum silicate
Crystal Structure Cubic 
Color-Change Garnet
Buy color-change garnet at GemSelect Specific Gravity 3.62 - 3.87
Chemical Composition Magnesium aluminum silicate
Crystal Structure Cubic 
Pyrope Garnet
Buy pyrope garnet at GemSelect Specific Gravity 3.62 - 3.87
Chemical Composition Magnesiium aluminum silicate
Crystal Structure Cubic 
Star Garnet
Buy star garnet at GemSelect Specific Gravity 3.62 - 3.87
Chemical Composition Iron aluminum silicate
Crystal Structure Rhombic 
Grossularite Garnet
Buy grossularite garnet at GemSelect Specific Gravity 3.57 - 3.73
Chemical Composition Calcium aluminum silicate
Crystal Structure Cubic 
Mali Garnet
Buy Mali garnet at GemSelect Specific Gravity 3.57 - 3.73
Chemical Composition Calcium aluminum silicate
Crystal Structure Cubic 
Tsavorite Garnet
Buy tsavorite garnet at GemSelect Specific Gravity 3.57 - 3.73
Chemical Composition Calcium aluminum silicate
Crystal Structure Rhombic 
Spinel
Buy spinel at GemSelect Specific Gravity 3.54 - 3.63
Chemical Composition Magnesium aluminium oxide
Crystal Structure Cubic 
Kyanite
Buy kyanite at GemSelect Specific Gravity 3.53 - 3.7
Chemical Composition Aluminum silicate
Crystal Structure Triclinic 
Sphene
Buy sphene at GemSelect Specific Gravity 3.52 - 3.54
Chemical Composition Calcium titanium silicate
Crystal Structure Monoclinic 
Diamond
Buy diamond at GemSelect Specific Gravity 3.5 - 3.53
Chemical Composition Carbon
Crystal Structure Cubic 
Topaz
Buy topaz at GemSelect Specific Gravity 3.49 - 3.57
Chemical Composition Aluminum fluosilicate
Crystal Structure Orthorhombic 
Mystic Topaz
Buy mystic topaz at GemSelect Specific Gravity 3.49 - 3.57
Chemical Composition Aluminum fluosilicate
Crystal Structure Orthorhombic 
Imperial Topaz
Buy imperial topaz at GemSelect Specific Gravity 3.49 - 3.57
Chemical Composition Aluminum fluosilicate
Crystal Structure Orthorhombic 
Azotic Topaz
Buy Azotic topaz at GemSelect Specific Gravity 3.49 - 3.57
Chemical Composition Aluminum fluosilicate
Crystal Structure Orthorhombic 
Rutile Topaz
Buy rutile topaz at GemSelect Specific Gravity 3.49 - 3.57
Chemical Composition Aluminum fluorsilicate
Crystal Structure Orthorhombic 
Rhodochrosite
Buy rhodochrosite at GemSelect Specific Gravity 3.45 - 3.7
Chemical Composition Manganese carbonate
Crystal Structure Trigonal 
Rhodonite
Buy rhodonite at GemSelect Specific Gravity 3.4 - 3.74
Chemical Composition Manganese silicate
Crystal Structure Triclinic 
Ruby in Zoisite
Buy ruby in zoisite at GemSelect Specific Gravity 3.35
Chemical Composition Rock containing zoisite, ruby and hornblende
Crystal Structure Orthorhombic 
Tanzanite
Buy tanzanite at GemSelect Specific Gravity 3.35
Chemical Composition Calcium aluminium silicate
Crystal Structure Orthorhombic 
Idocrase
Buy idocrase at GemSelect 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 Specific Gravity 3.3 - 3.39
Chemical Composition Hydrated aluminum oxide
Crystal Structure Orthorhombic 
Hemimorphite
Buy hemimorphite at GemSelect Specific Gravity 3.3 - 3.5
Chemical Composition Hydrous basic zinc silicate
Crystal Structure Orthorhombic 
Color Change Diaspore
Buy color change diaspore at GemSelect Specific Gravity 3.3 - 3.39
Chemical Composition Hydrated aluminum oxide
Crystal Structure Orthorhombic 
Peridot
Buy peridot at GemSelect Specific Gravity 3.28 - 3.48
Chemical Composition Magnesium iron silicate
Crystal Structure Orthorhombic 
Axinite
Buy axinite at GemSelect Specific Gravity 3.26 - 3.36
Chemical Composition Calcium aluminum borate silicate
Crystal Structure Triclinic 
Dumortierite Quartz
Buy dumortierite quartz at GemSelect Specific Gravity 3.26 - 3.41
Chemical Composition Aluminum borate silicate intergrown with quartz
Crystal Structure Orthorhombic 
Malachite
Buy malachite at GemSelect 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 Specific Gravity 3.23
Chemical Composition Aluminum silicate
Crystal Structure Orthorhombic 
Chrome Diopside
Buy chrome diopside at GemSelect Specific Gravity 3.22 - 3.38
Chemical Composition Calcium magnesium silicate
Crystal Structure Monoclinic 
Tashmarine Diopside
Buy tashmarine diopside at GemSelect Specific Gravity 3.22 - 3.38
Chemical Composition Calcium magnesium silicate
Crystal Structure Monoclinic 
Star Diopside
Buy star diopside at GemSelect Specific Gravity 3.22 - 3.38
Chemical Composition Calcium manganese silicate
Crystal Structure Monoclinic 
Hiddenite
Buy hiddenite at GemSelect Specific Gravity 3.17 - 3.19
Chemical Composition Lithium aluminum silicate
Crystal Structure Monoclinic 
Apatite
Buy apatite at GemSelect 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 Specific Gravity 3.16 - 3.23
Chemical Composition Basic fluoro- and chloro-calicum phosphate
Crystal Structure Hexagonal 
Spodumene
Buy spodumene at GemSelect Specific Gravity 3.15 - 3.21
Chemical Composition Lithium aluminum silicate
Crystal Structure Monoclinic 
Kunzite
Buy kunzite at GemSelect Specific Gravity 3.15 - 3.21
Chemical Composition Lithium aluminum silicate
Crystal Structure Monoclinic 
Clinohumite
Buy clinohumite at GemSelect Specific Gravity 3.13 - 3.75
Chemical Composition Magnesium silicate
Crystal Structure Monoclinic 
Andalusite
Buy andalusite at GemSelect Specific Gravity 3.05 - 3.2
Chemical Composition Aluminium silicate
Crystal Structure Orthorhombic 
Fluorite
Buy fluorite at GemSelect Specific Gravity 3 - 3.25
Chemical Composition Calcium fluoride
Crystal Structure Cubic 
Nuummite
Buy Nuummite at GemSelect Specific Gravity 3
Chemical Composition Rock containing gedrite and anthophyllite
Crystal Structure Lamellar fibrous structure 
Danburite
Buy danburite at GemSelect Specific Gravity 2.97 - 3.03
Chemical Composition Calcium boric silicate
Crystal Structure Orthorhombic 
Jadeite
Buy jadeite at GemSelect Specific Gravity 2.9 - 3.03
Chemical Composition Basic calcium magnesium iron silicate
Crystal Structure Monoclinic 
Nephrite Jade
Buy nephrite jade at GemSelect Specific Gravity 2.9 - 3.03
Chemical Composition Calcium magnesium iron silicate
Crystal Structure Monoclinic 
Tourmaline
Buy tourmaline at GemSelect 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 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 Specific Gravity 2.82 - 2.94
Chemical Composition Basic calcium aluminum silicate
Crystal Structure Orthorhombic 
Paraiba Tourmaline
Buy Paraiba tourmaline at GemSelect 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 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 Specific Gravity 2.8 - 2.9
Chemical Composition Potassium lithium aluminum fluoro-silicate
Crystal Structure Monoclinic 
Verdite
Buy verdite at GemSelect Specific Gravity 2.76 - 3
Chemical Composition Serpentine rock
Crystal Structure Monoclinic 
Sugilite
Buy sugilite at GemSelect Specific Gravity 2.76 - 2.8
Chemical Composition Potassium sodium lithium iron manganese aluminium
Crystal Structure Hexagonal 
Ammolite
Buy ammolite at GemSelect Specific Gravity 2.75 - 2.8
Chemical Composition Mainly aragonite (with calcite, silica and pyrite)
Crystal Structure Amorphous 
Larimar
Buy Larimar at GemSelect Specific Gravity 2.74 - 2.88
Chemical Composition Hydrated sodium calcium silicate with manganese
Crystal Structure Triclinic 
Calcite
Buy calcite at GemSelect Specific Gravity 2.69 - 2.71
Chemical Composition Calcium carbonate
Crystal Structure Trigonal 
Aquamarine
Buy aquamarine at GemSelect 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 Specific Gravity 2.68 - 2.74
Chemical Composition Aluminum beryllium silicate
Crystal Structure Hexagonal 
Beryl
Buy beryl at GemSelect Specific Gravity 2.67 - 2.78
Chemical Composition Aluminium beryllium silicate
Crystal Structure Hexagonal 
Emerald
Buy emerald at GemSelect Specific Gravity 2.67 - 2.78
Chemical Composition Aluminium beryllium silicate
Crystal Structure Hexagonal 
Goshenite
Buy goshenite at GemSelect Specific Gravity 2.66 - 2.87
Chemical Composition Aluminum beryllium silicate
Crystal Structure Hexagonal 
Andesine Labradorite
Buy andesine labradorite at GemSelect Specific Gravity 2.66 - 2.68
Chemical Composition Sodium calcium aluminum silicate
Crystal Structure Triclinic 
Morganite
Buy morganite at GemSelect Specific Gravity 2.66 - 2.87
Chemical Composition Aluminium beryllium silicate
Crystal Structure Hexagonal 
Amethyst
Buy amethyst at GemSelect Specific Gravity 2.65
Chemical Composition Silicon dioxide
Crystal Structure Trigonal 
Rose Quartz
Buy rose quartz at GemSelect Specific Gravity 2.65
Chemical Composition Silicon dioxide
Crystal Structure Trigonal 
Ametrine
Buy ametrine at GemSelect Specific Gravity 2.65
Chemical Composition Silicon dioxide
Crystal Structure Trigonal 
Citrine
Buy citrine at GemSelect Specific Gravity 2.65
Chemical Composition Silicon dioxide
Crystal Structure Hexagonal 
Quartz Cat's Eye
Buy quartz cat's eye at GemSelect Specific Gravity 2.65
Chemical Composition Silicon dioxide
Crystal Structure Trigonal 
Rutile Quartz
Buy rutile quartz at GemSelect Specific Gravity 2.65
Chemical Composition Silicon dioxide with titanium inclusions
Crystal Structure Trigonal 
Onyx
Buy onyx at GemSelect Specific Gravity 2.65 - 2.91
Chemical Composition Silicon dioxide
Crystal Structure Trigonal 
Smoky Quartz
Buy smoky quartz at GemSelect Specific Gravity 2.65
Chemical Composition Silicon dioxide
Crystal Structure Trigonal 
Strawberry Quartz
Buy strawberry quartz at GemSelect Specific Gravity 2.65
Chemical Composition Silicon dioxide with iron oxide inclusions
Crystal Structure Trigonal 
Mystic Quartz
Buy mystic quartz at GemSelect Specific Gravity 2.65
Chemical Composition Silicon dioxide
Crystal Structure Trigonal 
Quartz
Buy quartz at GemSelect Specific Gravity 2.65
Chemical Composition Silicon dioxide
Crystal Structure Trigonal 
Labradorite
Buy labradorite at GemSelect Specific Gravity 2.65 - 2.75
Chemical Composition Sodium calcium aluminum silicate
Crystal Structure Triclinic 
Aventurine
Buy aventurine at GemSelect Specific Gravity 2.64 - 2.69
Chemical Composition Silicon dioxide
Crystal Structure Trigonal 
Star Sunstone
Buy star sunstone at GemSelect Specific Gravity 2.62 - 2.65
Chemical Composition Sodium calcium aluminum silicate
Crystal Structure Triclinic 
Sunstone
Buy sunstone at GemSelect Specific Gravity 2.62 - 2.65
Chemical Composition Sodium calcium aluminium silicate
Crystal Structure Triclinic 
Pietersite
Buy pietersite at GemSelect Specific Gravity 2.6
Chemical Composition Silicon dioxide
Crystal Structure Aggregate 
Agate
Buy agate at GemSelect Specific Gravity 2.6 - 2.64
Chemical Composition Silicon dioxide
Crystal Structure Trigonal 
Fossil Coral
Buy fossil coral at GemSelect Specific Gravity 2.6 - 2.7
Chemical Composition Silicon dioxide
Crystal Structure Trigonal 
Pearl
Buy pearl at GemSelect Specific Gravity 2.6 - 2.85
Chemical Composition Calcium carbonate
Crystal Structure Orthorhombic 
Coral
Buy coral at GemSelect Specific Gravity 2.6 - 2.7
Chemical Composition Calcium carbonate
Crystal Structure Trigonal 
Agate Geode
Buy agate geode at GemSelect Specific Gravity 2.6 - 2.64
Chemical Composition Silicon dioxide
Crystal Structure Trigonal 
Chrysoprase
Buy chrysoprase at GemSelect Specific Gravity 2.58 - 2.64
Chemical Composition Silicon dioxide
Crystal Structure Trigonal 
Iolite
Buy iolite at GemSelect 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 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 Specific Gravity 2.58 - 2.64
Chemical Composition Silicon dioxide
Crystal Structure Trigonal 
Fire Agate
Buy fire agate at GemSelect Specific Gravity 2.58 - 2.64
Chemical Composition Silicon dioxide
Crystal Structure Trigonal 
Chalcedony
Buy chalcedony at GemSelect Specific Gravity 2.58 - 2.64
Chemical Composition Silicon dioxide
Crystal Structure Trigonal 
Star Rose Quartz
Buy star rose quartz at GemSelect Specific Gravity 2.58 - 2.64
Chemical Composition Silicon dioxide
Crystal Structure Hexagonal 
Peanut Wood
Buy peanut wood at GemSelect Specific Gravity 2.58 - 2.91
Chemical Composition Silicon dioxide
Crystal Structure Trigonal 
Carnelian
Buy carnelian at GemSelect Specific Gravity 2.58 - 2.64
Chemical Composition Silicon dioxide
Crystal Structure Trigonal 
Bloodstone
Buy bloodstone at GemSelect Specific Gravity 2.58 - 2.64
Chemical Composition Silicon dioxide
Crystal Structure Trigonal 
Tiger's Eye
Buy tiger's eye at GemSelect Specific Gravity 2.58 - 2.64
Chemical Composition Silicon dioxide
Crystal Structure Trigonal 
Scapolite
Buy scapolite at GemSelect 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 Specific Gravity 2.57 - 2.74
Chemical Composition Sodium calcium aluminum silicate
Crystal Structure Tetragonal 
Amazonite
Buy amazonite at GemSelect Specific Gravity 2.56 - 2.58
Chemical Composition Potassium aluminum silicate
Crystal Structure Triclinic 
Orthoclase
Buy orthoclase at GemSelect Specific Gravity 2.56 - 2.58
Chemical Composition Potassium aluminum silicate
Crystal Structure Monoclinic 
Rainbow Moonstone
Buy rainbow moonstone at GemSelect Specific Gravity 2.56 - 2.59
Chemical Composition Potassium aluminum silicate
Crystal Structure Monoclinic 
Star Moonstone
Buy star moonstone at GemSelect Specific Gravity 2.56 - 2.59
Chemical Composition Potassium aluminum silicate
Crystal Structure Monoclinic 
Moonstone
Buy moonstone at GemSelect Specific Gravity 2.56 - 2.59
Chemical Composition Potassium aluminum silicate
Crystal Structure Monoclinic 
Seraphinite
Buy seraphinite at GemSelect Specific Gravity 2.55 - 2.75
Chemical Composition Magnesium iron aluminum silicate hyroxide
Crystal Structure Monoclinic 
Charoite
Buy charoite at GemSelect 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 Specific Gravity 2.5 - 3
Chemical Composition Sodium calcium aluminum silicate
Crystal Structure Cubic 
Maw-Sit-Sit
Buy maw-sit-sit at GemSelect 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 Specific Gravity 2.5 - 2.9
Chemical Composition Silicon dioxide
Crystal Structure Trigonal 
Howlite
Buy howlite at GemSelect Specific Gravity 2.45 - 2.58
Chemical Composition Calcium borosilicate hydroxide
Crystal Structure Monoclinic 
Serpentine
Buy serpentine at GemSelect Specific Gravity 2.44 - 2.62
Chemical Composition Basic magnesium silicate
Crystal Structure Microcrystalline 
Variscite
Buy variscite at GemSelect Specific Gravity 2.42 - 2.58
Chemical Composition Hydrous aluminum phosphate
Crystal Structure Orthorhombic 
Hambergite
Buy hambergite at GemSelect Specific Gravity 2.35
Chemical Composition Beryllium borate
Crystal Structure Orthorhombic 
Obsidian
Buy obsidian at GemSelect Specific Gravity 2.35 - 2.6
Chemical Composition Siliceous glassy rock
Crystal Structure Amorphous 
Snowflake Obsidian
Buy snowflake obsidian at GemSelect Specific Gravity 2.35 - 2.6
Chemical Composition Siliceous glassy rock
Crystal Structure Amorphous 
Moldavite
Buy moldavite at GemSelect Specific Gravity 2.32 - 2.38
Chemical Composition Silicon dioxide + aluminum oxide
Crystal Structure Amorphous 
Turquoise
Buy turquoise at GemSelect Specific Gravity 2.31 - 2.84
Chemical Composition Hydrated copper aluminum phosphate
Crystal Structure Triclinic 
Rubellite Tourmaline
Buy rubellite tourmaline at GemSelect 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 Specific Gravity 2.27 - 2.33
Chemical Composition Sodium aluminum silicate chloride
Crystal Structure Cubic 
Hackmanite
Buy hackmanite at GemSelect Specific Gravity 2.14 - 2.4
Chemical Composition Sodium aluminum silicate chloride
Crystal Structure Cubic 
Opal Doublet
Buy opal doublet at GemSelect Specific Gravity 1.98 - 2.5
Chemical Composition Hydrous silicon dioxide
Crystal Structure Amorphous 
Fire Opal
Buy fire opal at GemSelect Specific Gravity 1.98 - 2.5
Chemical Composition Hydrous silicon dioxide
Crystal Structure Amorphous 
Moss Opal
Buy moss opal at GemSelect Specific Gravity 1.98 - 2.5
Chemical Composition Hydrous silicon dioxide
Crystal Structure Amorphous 
Opal
Buy opal at GemSelect Specific Gravity 1.98 - 2.5
Chemical Composition Hydrous silicon dioxide
Crystal Structure Amorphous 
Boulder Opal
Buy boulder opal at GemSelect Specific Gravity 1.98 - 2.5
Chemical Composition Hydrous silicon dioxide
Crystal Structure Amorphous 
Chrysocolla
Buy chrysocolla at GemSelect Specific Gravity 1.9 - 2.4
Chemical Composition Hydrous copper silicate
Crystal Structure Monoclinic 
Amber
Buy amber at GemSelect Specific Gravity 1.05 - 1.1
Chemical Composition Oxygenated hydrocarbon (variable)
Crystal Structure Amorphous