Diamond
Diamond (pure Carbon, C)
Category
Browse mineral (synthetic paper and ink polymorph) specimens identified by the Rock Identifier community.
Diamond
Diamond (pure Carbon, C)
Herkimer Diamond
Quartz (Silicon Dioxide, SiO2)
Almandine Garnet
Almandine - Fe3Al2(SiO4)3
Carnelian Agate
Silicon Dioxide (SiO2) with iron oxide impurities
Rhodochrosite
Manganese Carbonate (MnCO3)
Olivine (Peridot)
Magnesium Iron Silicate ((Mg, Fe)2SiO4)
Pearl
Calcium Carbonate (CaCO3) - mainly Aragonite and Calcite
Carnelian (Red Chalcedony)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Pyrite
Iron Sulfide (FeS2)
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
Carnelian
Carnelian (SiO2 with Iron Oxide impurities)
Aquamarine
Beryl (Be₃Al₂Si₆O₁₈)
Milky Quartz Pebble
Quartz (Silicon Dioxide - SiO2)
Milky Quartz Cobble
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Orca Agate (Chalcedony)
Silicon Dioxide (SiO2) with inclusions
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Mixed collection of Quartz varieties, Chalcedony, and metamorphic pebbles
Mixed gemstones (primarily Silicon Dioxide - SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
Diamond
Carbon (C)
Calcite
Calcium Carbonate (CaCO3)
Green Chalcedony
Silicon Dioxide (SiO2) with trace minerals
Amethyst (Faceted)
Silicon Dioxide with Iron impurities (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Specular Hematite (Iron Ore)
Iron(III) oxide (Fe2O3)
Gold Nugget
Native Gold (Au)
Pyrite (on Quartz/Sulfide matrix)
Iron Sulfide (FeS2)
Aquamarine
Beryl (Be3Al2Si6O18)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
Quartz Druzy on Matrix (with Copper Mineralization)
Silicon Dioxide (SiO2) with Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·n H2O)
Desert Rose
Gypsum (CaSO4·2H2O) or Barite (BaSO4) inclusions in sand
Red Quartz (Carnelian/Red Jasper Agate)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Silver (Jewelry form)
Native Silver (Ag)
Raw Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium)
Carnelian and White Quartz Bracelet
Silicon Dioxide (SiO2) - specifically Carnelian (Chalcedony) and Rock Crystal/Snow Quartz
Amber (Rough Baltics/Beach Specimen)
Succinicum (Organic Gemstone - Fossilized Resin)