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  • Gemstones classification by hardness

Gemstones classification by hardness

HARD GEMS (easy to use in jewellery): hardness 7.5 to 10
Alexandrite Alexandrite (3)
Chrysoberyl Chrysoberyl (17)
CZ (Cubic Zirconia) CZ (Cubic Zirconia) (13)
Diamant trapiche Diamant trapiche (3)
Diamond Diamond (108)
Diamond (black) Diamond (black) (48)
Diamond (blue- treated) Diamond (blue- treated) (28)
Diamond (brown) Diamond (brown) (26)
Diamond (pink) Diamond (pink) (13)
Diamond (yellow-green) Diamond (yellow-green) (1)
Diamond, all colours, single piece Diamond, all colours, single piece (8)
Diamond, calibrated, all colours Diamond, calibrated, all colours (122)
Dumortierite Dumortierite (3)
Goshenite (white beryl) Goshenite (white beryl) (5)
Hibonite Hibonite (1)
Pezzottaite Pezzottaite (3)
Phenakite Phenakite (5)
Pietersite Pietersite (21)
Rhodizite Rhodizite (1)
Ruby Ruby (44)
Ruby (round calibrated) Ruby (round calibrated) (60)
Ruby (star) Ruby (star) (3)
Sapphire - black star Sapphire - black star (1)
Sapphire France (Auvergne) Sapphire France (Auvergne) (4)
Sapphire (blue - round calibrated) Sapphire (blue - round calibrated) (60)
Sapphire (blue) Sapphire (blue) (67)
Sapphire (green - round - calibrated) Sapphire (green - round - calibrated) (21)
Sapphire (green) Sapphire (green) (20)
Sapphire (pink - round - calibrated) Sapphire (pink - round - calibrated) (131)
Sapphire (pink) Sapphire (pink) (17)
Sapphire (purple - calibrated) Sapphire (purple - calibrated) (50)
Sapphire (purple - calibrated) Sapphire (purple - calibrated) (18)
Sapphire (purple) Sapphire (purple) (23)
Sapphire (purple- calibrated) Sapphire (purple- calibrated) (12)
Sapphire (round, calibrated,fuchsia) Sapphire (round, calibrated,fuchsia) (69)
Sapphire (white - calibrated) Sapphire (white - calibrated) (27)
Sapphire (white) Sapphire (white) (3)
Sapphire (yellow - round - calibrated) Sapphire (yellow - round - calibrated) (49)
Sapphire (yellow) Sapphire (yellow) (48)
Sapphire (yellow-orange - calibrated) Sapphire (yellow-orange - calibrated) (3)
Sapphire (yellow-orange - round calibrated) Sapphire (yellow-orange - round calibrated) (18)
Sapphire - all colours Sapphire - all colours (186)
Sapphire, round, calibrated, all colours Sapphire, round, calibrated, all colours (346)
Seraphinite Seraphinite (15)
Special cut Special cut (21)
Spinel Spinel (340)
Spinel (black - round calibrated) Spinel (black - round calibrated) (104)
Spinel (round, calibrated) Spinel (round, calibrated) (139)
Star sapphire Star sapphire (6)
Synthetic emerald Synthetic emerald (16)
Topaz (bicolor) Topaz (bicolor) (3)
Topaz (imperial) Topaz (imperial) (8)
Topaz (london blue- treated) Topaz (london blue- treated) (124)
Topaz (pink) Topaz (pink) (2)
Topaz (sky blue- treated) Topaz (sky blue- treated) (88)
Topaz (swiss blue- treated) Topaz (swiss blue- treated) (145)
Topaz (white) Topaz (white) (120)
Topaz - Cat's eye Topaz - Cat's eye (2)
Topaz with inclusions Topaz with inclusions (14)
Trapiche sapphire Trapiche sapphire (6)
Trapiche sapphire - myanmar (burma) Trapiche sapphire - myanmar (burma) (6)
MEDIUM HARD GEMS(usable in jewellery): hardness 5.75 to 7.5
Afghanite Afghanite (11)
Agate Agate (8)
Agate (cross) Agate (cross) (20)
Agate (dendritic) Agate (dendritic) (7)
Agate (landscape) Agate (landscape) (125)
Amazonite Amazonite (13)
Amethyst Amethyst (127)
Amethyst "rose de france" Amethyst "rose de france" (2)
Ametrine Ametrine (34)
Andalusite Andalusite (1)
Andesine Andesine (228)
Andesine with certificate Andesine with certificate (33)
Apache Gold Cabochon Apache Gold Cabochon (8)
Aquamarine Aquamarine (48)
Aquamarine (round, calibrated) Aquamarine (round, calibrated) (13)
Axinite Axinite (9)
Bois fossile - Peanut Wood Bois fossile - Peanut Wood (10)
Bytownite Bytownite (1)
Cassiterite Cassiterite (8)
Chalcedony Chalcedony (13)
Chondrodite Chondrodite (2)
Chromiferous omphacite jade Chromiferous omphacite jade (1)
Chrysocolla silica Chrysocolla silica (3)
Chrysocolle cuprite Chrysocolle cuprite (7)
Chrysoprase Chrysoprase (20)
Citrine Citrine (129)
Color change garnet Color change garnet (28)
Coral Coral (1)
Coral -Fossil Coral -Fossil (9)
Danburite Danburite (25)
Diaspore Diaspore (5)
Dinosaur bone Dinosaur bone (37)
Dunilite Dunilite (2)
Emerald Emerald (35)
Emerald (calibrated) Emerald (calibrated) (22)
Emeraude Trapiche Emeraude Trapiche (5)
Euclase Euclase (2)
Fire opal Fire opal (113)
Forsterite Forsterite (7)
Fossil wood with opal Fossil wood with opal (16)
Garnet Garnet (112)
Garnet (demantoid) Garnet (demantoid) (54)
Garnet (Malaya - Umbalite) Garnet (Malaya - Umbalite) (31)
Garnet (mandarine) Garnet (mandarine) (16)
Garnet (Pyralspite) Garnet (Pyralspite) (1)
Garnet (pyrope) Garnet (pyrope) (5)
Garnet - tsavorite (round - diamond cut) Garnet - tsavorite (round - diamond cut) (5)
Garnet grossular Garnet grossular (11)
Garnet, all categories Garnet, all categories (315)
Hackmanite Hackmanite (5)
Hambergite Hambergite (4)
Hauyne Hauyne (13)
Heliodor (yellow beryl) Heliodor (yellow beryl) (5)
Hessonite Hessonite (1)
Idocrase (Vésuvianite) Idocrase (Vésuvianite) (7)
Iolite (Cordiérite) Iolite (Cordiérite) (17)
Jade Maw Sit Sit (chloromélanite) Jade Maw Sit Sit (chloromélanite) (32)
Jaspe Jaspe (34)
Jaspe paysage Jaspe paysage (24)
Jeremejevite Jeremejevite (1)
Johachidolite Johachidolite (1)
Kornerupine Kornerupine (4)
Kunzite Kunzite (12)
Labradorite Labradorite (14)
Labradorite (gem) Labradorite (gem) (4)
Labradorite (sunstone) Labradorite (sunstone) (1)
Leopard opal Leopard opal (1)
Magnetite Magnetite (1)
Milky aquamarine Milky aquamarine (3)
Moldavite Moldavite (7)
Montebrasite Montebrasite (3)
Moonstone Moonstone (70)
Morganite (Pink Beryl) Morganite (Pink Beryl) (19)
Mtorolite Mtorolite (5)
Oligoclase Oligoclase (1)
Onyx Onyx (2)
Opal Opal (108)
Opal (boulder) Opal (boulder) (26)
Opal (gem) Opal (gem) (7)
Opale cat's eyes Opale cat's eyes (39)
Orthoclase Orthoclase (17)
Peridot Peridot (57)
Peridot (from meteorite!) Peridot (from meteorite!) (14)
Petalite Petalite (11)
Petrified wood Petrified wood (22)
Pink quartz with pyrite Pink quartz with pyrite (2)
Pollucite Pollucite (1)
Prehnite Prehnite (55)
Quartz (cat's eye) Quartz (cat's eye) (1)
Quartz (Lemon or Oro verde quartz) Quartz (Lemon or Oro verde quartz) (6)
Quartz (pink) Quartz (pink) (72)
Quartz (smokey) Quartz (smokey) (122)
Quartz (star) Quartz (star) (4)
Quartz à Lazulite Quartz à Lazulite (16)
Quartz super 7 - cocochonite Quartz super 7 - cocochonite (10)
Quartz Trapiche Quartz Trapiche (11)
Quartz w hematite - lepidocrocite Quartz w hematite - lepidocrocite (19)
Quartz w thulite Quartz w thulite (9)
Quartz with amphibole Quartz with amphibole (4)
Quartz with chlorite Quartz with chlorite (9)
Quartz with fluorite Quartz with fluorite (7)
Quartz with fuchsite Quartz with fuchsite (23)
Quartz with gilalite Quartz with gilalite (5)
Quartz with golden rutile Quartz with golden rutile (244)
Quartz with golden rutile, cabochon Quartz with golden rutile, cabochon (1)
Quartz with hematite Quartz with hematite (20)
Quartz with marcassite Quartz with marcassite (8)
Quartz with mn Quartz with mn (22)
Quartz with pyrite Quartz with pyrite (4)
Quartz with rutile Quartz with rutile (17)
Quartz with rutile. Cat's eye Quartz with rutile. Cat's eye (7)
Quartz with Sulfur Quartz with Sulfur (1)
Quartz with tourmaline Quartz with tourmaline (83)
Quartz with various inclusions Quartz with various inclusions (359)
Rhodolite garnet Rhodolite garnet (124)
Rhodonite Rhodonite (3)
Rutile Rutile (3)
Sanidine Sanidine (11)
Sapphirine Sapphirine (4)
Scapolite Scapolite (10)
Serendibite Serendibite (1)
Sillimanite Sillimanite (1)
Sinhalite Sinhalite (1)
Sodalite Sodalite (9)
Spessartite garnet Spessartite garnet (42)
Staurolite Staurolite (3)
Sugilite Sugilite (6)
Tanzanite Tanzanite (25)
Tectite - libyan glass Tectite - libyan glass (17)
Tiger eye Tiger eye (25)
Tourmaline Tourmaline (119)
Tourmaline (bicolor) Tourmaline (bicolor) (3)
Tourmaline (blue - indigolite) Tourmaline (blue - indigolite) (11)
Tourmaline (blue-green round calibrated) Tourmaline (blue-green round calibrated) (20)
Tourmaline (green) Tourmaline (green) (18)
Tourmaline (magenta) Tourmaline (magenta) (1)
Tourmaline (paraiba) Tourmaline (paraiba) (1)
Tourmaline (pink) Tourmaline (pink) (8)
Tourmaline (rubellite) Tourmaline (rubellite) (14)
Tourmaline (yellow) Tourmaline (yellow) (4)
Tourmaline cats'eye Tourmaline cats'eye (9)
Tsavorite Tsavorite (30)
Vesuvianite Vesuvianite (8)
White Quartz White Quartz (3)
Zircon Zircon (57)
Zircon (blue) Zircon (blue) (43)
Zircon (red to brown) Zircon (red to brown) (3)
Zircon (white) Zircon (white) (8)
Zoisite Zoisite (14)
SOFT GEMS (collector stones, not suitable for use in jewellery): hardness 4 to 5.5
Ammolite Ammolite (2)
Apatite Apatite (17)
Azurite Azurite (8)
Azurite - Malachite Azurite - Malachite (29)
Bastnaesite Bastnaesite (2)
Buchite Buchite (1)
Carrolite Carrolite (1)
Catapleite Catapleite (1)
Charoite cabochon Charoite cabochon (16)
Chromium diopside Chromium diopside (7)
Chrysocolle azurite malachite Chrysocolle azurite malachite (15)
Chrysocolle Malachite Chrysocolle Malachite (1)
Cuprite Cuprite (1)
Diopside Diopside (1)
Diopside cat's eyes Diopside cat's eyes (1)
Diopside star Diopside star (4)
Dioptase Dioptase (1)
Disthène (Cyanite ou Kyanite) Disthène (Cyanite ou Kyanite) (28)
Edenite Edenite (2)
Enstatite Enstatite (13)
Eosphorite Eosphorite (3)
Eudialyte Eudialyte (4)
Fluorite Fluorite (63)
Hematite Hematite (8)
Hemimorphite Hemimorphite (8)
Hyalite Hyalite (10)
Hyperstene Hyperstene (4)
Ilmenite Ilmenite (2)
Kammererite cabochon Kammererite cabochon (4)
Kyanite Kyanite (29)
Lapis Lapis (26)
Larimar Larimar (57)
Mizzonite Mizzonite (1)
Obsidian Obsidian (21)
Os Côte de boeuf Os Côte de boeuf (1)
Parisite Parisite (1)
Powellite Powellite (1)
Psilomélane Psilomélane (2)
Purpurite Purpurite (3)
Rhodochrosite Rhodochrosite (7)
Richterite Richterite (2)
Scheelite Scheelite (6)
Scolecite Scolecite (20)
Serandite Serandite (4)
Smithsonite Smithsonite (6)
Sphalerite Sphalerite (61)
Sphene (titanite) Sphene (titanite) (10)
Spiny Oyster Spiny Oyster (7)
Triplite Triplite (5)
Turquoise Turquoise (114)
Värynenite Värynenite (1)
SOFT GEMS (for collectors): hardness 1 to 3.5
Amber with insect Amber with insect (5)
Anglesite Anglesite (1)
Anhydrite Anhydrite (1)
Aragonite Aragonite (2)
Barite Barite (4)
Bowenite Bowenite (1)
Calcite Calcite (4)
Calcite cat's eye Calcite cat's eye (1)
Cavansite Cavansite (3)
Celestite Celestite (2)
Cerusite Cerusite (1)
Cobaltocalcite Cobaltocalcite (8)
Crocoite Crocoite (1)
Lepidolite Lepidolite (9)
Lizardite Lizardite (7)
Paesine - Pietra Paesina Paesine - Pietra Paesina (7)
Phosphosiderite Phosphosiderite (5)
Priceite Priceite (1)
Shattuckite Shattuckite (17)
Stichtite Stichtite (1)
Sulfur Sulfur (1)
Sussexite Sussexite (4)

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