Ammolite
Ammolite (Biogenic Aragonite with trace elements; fossils of Placenticeras meeki and Placenticeras intercalare)
Category
Browse gemstone specimens identified by the Rock Identifier community.
Ammolite
Ammolite (Biogenic Aragonite with trace elements; fossils of Placenticeras meeki and Placenticeras intercalare)
Amber
Succinite (Organic Gemstone)
Amber
Organic gemstone (Succinite)
Citrine
Silicon Dioxide (SiO2) with iron impurities
Peridot
Olivine (Mg, Fe)2SiO4
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)
Rough Garnet (Almandine)
Almandine Garnet (Fe3Al2(SiO4)3)
Peridot
Olivine (Magnesium Iron Silicate - (Mg, Fe)2SiO4)
Hypersthene
Hypersthene ((Mg,Fe)SiO3)
Zebra Jasper
Tetragonal Silicon Dioxide (Quartz) with impurities
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)
Turquoise and Red Coral
CuAl6(PO4)4(OH)8·4H2O (Turquoise) and Corallium rubrum (Red Coral)
Aquamarine
Beryl (Be3Al2Si6O18)
Ammolite
Biogenic gemstone (Aragonite, CaCO3)
Precious Red Coral
Corallium rubrum (Calcium Carbonate, CaCO3)
Turquoise and Red Coral
Turquoise: CuAl6(PO4)4(OH)8·4H2O; Red Coral: Corallium rubrum (organic gemstone)
Beaded Jewelry (Assorted Gemstones)
Various minerals, including but not limited to Quartz (SiO2), Garnet (X3Y2(SiO4)3), Jade (Na(Al,Fe)Si2O6), Amethyst (SiO2),等の多様な組み合わせ
Yellow Sapphire or Citrine
Al2O3 (Corundum) or SiO2 (Quartz)
White Topaz
Al2SiO4(F,OH)2
Peridot (Olivine)
Magnesium Iron Silicate (Mg, Fe)2SiO4
Smoky Quartz
Silicon Dioxide (SiO2)
Citrine
Silicon dioxide (SiO2) - yellow quartz variety
Fairburn Agate / Agate-bearing Breccia
Cryptocrystalline Quartz (SiO2) within Jasper/Breccia matrix
Diamond in Gold Setting
Diamond (C - pure carbon)
Amethyst (Faceted Gemstone)
Silicon Dioxide (SiO2) with iron impurities
Pearl
Calcium Carbonate (primarily Aragonite and Calcite), CaCO3
Carnelian
Carnelian (subset of Chalcedony); SiO2 with Iron Oxide impurities
Black Pearl (Tahitian or Irradiated Type)
Organic gemstone (Calcium Carbonate with Conchiolin Binding)
Aquamarine
Beryl (Be3Al2Si6O18)
Tanzanite
Blue Zoisite (Ca2Al3(SiO4)(Si2O7)O(OH))
Rough Amber (likely Copal or immature Amber)
Organic gemstone / Succinite (if Baltic)
Amber
Succinicum (Organic Gemstone - Resinite)
Turquoise and Red Coral (with Grizzly Bear Claw)
Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Precious Coral (Corallium rubrum)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
Peridot
Olivine (Mg, Fe)2SiO4
Emerald (Faceted Gemstone)
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
Jadeite and Assorted Corundum (Ruby/Sapphire) / Beryl (Emerald)
Jadeite (NaAlSi2O6), Ruby/Sapphire (Al2O3), Emerald (Be3Al2(SiO3)6)
Peridot
Olivine (Mg, Fe)2SiO4
Spiny Oyster Shell
Spondylus (Calcium Carbonate, CaCO3)
Aventurine (likely Green Aventurine)
Silicon Dioxide (SiO2) with mineral inclusions
Precious Red Coral
Corallium rubrum / Corallium japonicum