Sandstone
Arenite
Category
Browse man made metamorphic style composite specimens identified by the Rock Identifier community.
Sandstone
Arenite
Diamond (in jewelry setting)
Carbon (C)
Pearl
Aragonite (CaCO3) with Conchiolin
White Marble (Tumbled)
Recrystallized Calcite (CaCO3)
Granite
Granite (a felsic intrusive igneous rock)
Nephrite Jade
Ca2(Mg,Fe)5Si8O22(OH)2
Specular Hematite (Specularite)
Iron Oxide (Fe2O3)
Quartz (Milky Quartz)
Quartz (SiO2 - Silicon Dioxide)
Quartzite
Quartzite (primarily SiO₂)
White Jade (Nephrite)
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)
Sandstone (Red/Brown Variety)
Arenite (composed primarily of SiO2 with Fe2O3 iron oxide inclusions)
Diamond (in jewelry setting)
Adamantine Carbon (C)
Granite
Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)
Pyrite
Iron Sulfide (FeS2)
Peridot and Citrine Gemstones (in a ring setting)
Peridot (Olivine: (Mg,Fe)2SiO4), Citrine (Quartz: SiO2)
Lazulite
Lazulite (Mg,Fe2+)Al2(PO4)2(OH)2
Basalt with Epidote (Porphyry)
Basalt (with inclusions of Epidote/Feldspar)
Dalmatian Stone
Peralkaline Quartz-Feldspar Rock
Calcite
Calcite (Mineral, Calcium Carbonate - CaCO3)
Diamond (or Diamond Simulant)
Carbon (C)
Green Slag Glass
Amorphous Silica / Glassy Blast Furnace Slag
Quartz (Microcrystalline/Chert)
Silicon Dioxide (SiO2)
Granite Pebble
Granite
Diamond (as set in a metal alloy ring)
Diamond (Pure Carbon, C)
Marble
Marble (primarily Calcite, CaCO3 or Dolomite, CaMg(CO3)2)
Chert (Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (variations include Flint/Novaculite)
Chert (formula: SiO2)
Chert (often called Flint for darker varieties)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Pearl (Biogenic Mineraloid)
Calcium carbonate (Aragonite) and Conchiolin, CaCO3
Sandstone
Arenite (general term for sandstone)
White Marble
Calcite-rich Metasomatized Carbonate (CaCO3)
Marble
Metamorphosed Limestone (principally CaCO3)
Moonstone
Adularia (Potassium Aluminum Silicate, KAlSi3O8)
Quartz
Quartz (SiO2 - Silicon Dioxide)
Rough Diamond
Diamond (Pure Carbon: C)
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
Banded Onyx (Green Onyx)
Banded Calcite or Travertine (CaCO3)
Jade
Jadeite or Nephrite
Diamond
Diamond (pure Carbon, C)
Granite Pebble
Granite (Phaneritic Quartz-Feldspar Rock)
Chert (or Flint)
Chert (cryptocrystalline quartz), SiO2