Rough Diamond
Diamond (pure Carbon, C)
mineral
Category
Gemstone
Browse gemstone specimens identified by the Rock Identifier community.
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Citrine
Citrine (Silicon Dioxide - SiO2)
mineral
Amber
Succinite (approximate formula C10H16O)
mineral
Rhodonite
Rhodonite (Manganese silicate), (Mn,Fe,Mg,Ca)SiO3
mineral
Petrified Wood
Silicified wood (principally SiO2)
sedimentary
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Amethyst Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Red Jasper (Chert)
Silicon Dioxide (SiO2)
sedimentary
Pearl
Calcium Carbonate (Aragonite/Calcite mixed with Conchiolin), CaCO3
mineral
Goldstone
Aventurine glass (Synthetic glass with copper inclusions)
mineraloid / man-made glass
Diamond (or Cubic Zirconia)
Crystallized Carbon (C) for Diamond; Zirconium Dioxide (ZrO2) for CZ
mineral
Natural Pearl
Calcium carbonate (primarily Aragonite and Conchiolin), CaCO3
mineral
Sunstone
Aventurine Feldspar (Plagioclase or Oligoclase)
mineral
Sunstone (Feldspar variety)
Oligoclase or Andesine (Na,Ca)(Al,Si)4O8
mineral
Carnelian (Chalcedony)
Silicon Dioxide (SiO2)
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Amethyst
Silicon Dioxide (SiO2)
mineral
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Dearest Ring (Gemstones)
Mixed Gemstones: Diamond (C), Emerald (Be3Al2Si6O18), Amethyst (SiO2), Ruby (Al2O3), Sapphire (Al2O3), Topaz (Al2SiO4(F,OH)2)
mineral
Zircon
Zircon (Zirconium Silicate - ZrSiO4)
mineral
Peridot (Olivine)
Olivine ((Mg, Fe)2SiO4)
mineral
Turquoise
Hydrated phosphate of copper and aluminum, CuAl6(PO4)4(OH)8·4H2O
mineral
Peridot (Olivine)
Olivine, (Mg, Fe)2SiO4
mineral
Turquoise
Hydrated copper and aluminum phosphate (CuAl6(PO4)4(OH)8·4H2O)
mineral
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Spinel
Magnesium Aluminum Oxide (MgAl2O4)
mineral
Diamond in Kimberlite
Diamond in Kimberlite Matrix (Diamond: C, Kimberlite: complex Potassic Peridotite)
igneous
Lapis Lazuli
Lapis lazuli (complex rock composed of Lazurite, Calcite, and Pyrite)
metamorphic
Raw Emerald in Schist Matrix
Beryl (Be3Al2Si6O18) in Mica Schist
Mineral in Metamorphic Rock
Mixed Gemstone Bracelet
Mixed natural minerals and rocks (e.g., Rhodonite, Malachite, Sodalite, Rose Quartz, Black Tourmaline, Quartz/Chalcedony variants)
Mineral/Rock assemblage
Diamond (Cut Gemstone)
Carbon (C)
mineral
Diamond (Faceted Gemstone)
Native Carbon (C)
mineral
Chrysocolla
Hydrated copper silicate (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Watermelon Tourmaline
Elbaite (Na(Li,Al)3Al6(Si6O18)(BO3)3(OH)4)
mineral
Emerald
Beryl (Be3Al2(SiO3)6) with trace Chromium/Vanadium
mineral
Turquoise in Matrix
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Carnelian
Carnelian (Silicon Dioxide, SiO2)
mineral
Amber
Succinite / Fossilized Resin (C10H16O)
fossil
Tumbled Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Malachite
Copper carbonate hydroxide Cu2CO3(OH)2
mineral
Amber
Succinited (fossilized tree resin)
fossil