Blue Topaz (facetted in jewelry)
Aluminum silicate fluoride hydroxide (Al2SiO4(F,OH)2)
mineral
Category
Metal (Elemental Mineral)
Browse metal (elemental mineral) specimens identified by the Rock Identifier community.
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Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
gemstone
Goldstone (Red/Brown)
Aventurine Glass (SiO2 with Copper inclusions)
Mineral (Man-made glass)
Pyrite
Pyrite (FeS2)
Mineral
Quartzite
Quartzite (Primary mineral: Silicon Dioxide, SiO2)
metamorphic
Weathered porphyritic basalt
Basalt, likely plagioclase-phyric basalt; primarily a fine-grained aggregate of plagioclase feldspar, clinopyroxene, and possibly olivine or iron-titanium oxides
igneous
Emerald
Beryl (Be₃Al₂Si₆O₁₈), specifically the green variety colored by trace amounts of chromium or vanadium.
Mineral
Bauxite Ore
Hydrated aluminum oxides (e.g., Gibbsite Al(OH)3, Boehmite ̲̲̲̲AlOOH, Diaspore ̲̲̲̲AlOOH)
Mineral
Green glass sphere/marble
Soda-lime glass (primarily SiO2, Na2O, CaO)
Man-made object (Simulant)
Synthetic Blue Aura Quartz
Silicon Dioxide (SiO2) with Metallic Infusion
mineral (synthetic/man-made coating)
Imperial Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz with Mineral Inclusions
Sedimentary
Rose Quartz
Rose Quartz (SiO₂)
mineral
Quartz (River Siltstone Quartzite Pebble)
Silicon Dioxide (SiO2)
metamorphic
Diamond
Carbon (C)
mineral
Blue Goldstone
Goldstone (artificial glass)
Mineral (man-made glass, not natural)
Granite (weathered pebble)
Granite (plutonic igneous rock)
Igneous
Garnet
Group of silicate minerals (e.g., Almandine: Fe3Al2(SiO4)3)
gemstone
Tanzanite
Blue-violet Zoisite (Ca2Al3(SiO4)3(OH))
mineral
Chert (Nodular Chert)
Microcrystalline Silica (SiO2)
sedimentary
Aquamarine
Beryl (Be3Al2Si6O18), specifically the blue-green variety
Mineral
Aquamarine
Beryl (Be3Al2Si6O18), specifically the blue-green variety
Mineral
Chalcopyrite
Chalcopyrite (CuFeS2)
Mineral
Ruby
Corundum (Al2O3 with Chromium traces)
mineral
Milky Quartz
Quartz (SiO2)
Mineral
Blue Goldstone
Aventurine Glass
Man-made glass (often grouped with minerals in lapidary)
Beryl (Variety Mix)
Be3Al2(Si6O18)
Mineral
Dolomite
Dolomite (CaMg(CO3)2)
Mineral
Granite
Granite (a broadly defined plutonic igneous rock, often more specifically classified as quartz monzonite or granodiorite based on precise mineral percentages)
igneous
Diamond
Diamond (pure Carbon, C)
mineral
Greisen
Greisen
Metamorphic
Serpentinite
Serpentinite (composed primarily of serpentine minerals like antigorite, chrysotile, and lizardite)
metamorphic
Serpentinite
Serpentinite (a rock composed predominantly of serpentine group minerals)
metamorphic
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Blue Goldstone
Synthetic Avanturine Glass (or Aventurine Glass)
Synthetic Glass
Pyrite
Iron Pyrite (FeS2)
Mineral
Garnet (likely Almandine, Pyrope, or a blend)
Garnet group minerals: X3Y2(SiO4)3, where X and Y represent various metal ions (e.g., Almandine: Fe3Al2(SiO4)3, Pyrope: Mg3Al2(SiO4)3)
Mineral
Quartz
Quartz (Silicon Dioxide - SiO2)
Mineral
Pyrite
Pyrite (Iron sulfide, FeS₂)
mineral
Diamond
Diamond (pure carbon; C)
Mineral
Stainless Steel (Polished)
Ferrous Alloy containing Iron (Fe), Chromium (Cr), and Carbon (C)
Mineral equivalent / Metal Alloy
Quartzite
Quartzite (primarily composed of SiO O₂)
Sedimentary Rock
United States Quarter Dollar
Cupronickel Clad Alloy (75% Copper, 25% Nickel over a 100% Copper core)
Metal / Man-made mineral-like object