Celestite (Celestine)
Strontium sulfate (SrSO4)
mineral
Category
Mineral Based Human Made Alloy
Browse mineral based human made alloy specimens identified by the Rock Identifier community.
Strawberry Quartz
Silicon Dioxide (SiO2) with Hematite/Goethite inclusions
mineral
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Field Stone/Jasper variety)
Microcrystalline Quartz (SiO2)
sedimentary
Marble
Metamorphosed Limestone (principally CaCO3)
metamorphic
Sandstone
Arenite
sedimentary
Diorite
Diorite
igneous
Chert (Common Variety, Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Chert / Flint
Silicon Dioxide (SiO₂)
sedimentary
Diamond in Gold Setting
Diamond (C - pure carbon)
mineral
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Granite (with Beryl/Aquamarine)
Granite (Feldspar, Quartz, Mica, and Beryl Be3Al2Si6O18)
igneous
Rose Quartz Carving
Quartum roseum (Variety of Quartz, SiO2)
Mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Sandstone (with potential iron-oxide weathering)
Arenite (SiO2 based)
sedimentary
Chert (Flint variety)
Chert (Microcrystalline or Cryptocrystalline Quartz), SiO2
sedimentary
Celestite (Celestine)
Strontium sulfate (SrSO4)
mineral
Moss Agate
Silicon Dioxide with inclusions (SiO2)
mineral
Vanadinite
Lead Chlorovanadate, Pb5(VO4)3Cl
mineral
Granite Thin Section
Granitic rock (Phaneritic texture)
igneous
Vanadinite
Lead Chlorovanadate - Pb5(VO4)3Cl
mineral
Coquina
Bioclastic Limestone (composed primarily of CaCO3)
sedimentary
Sandstone (likely Quartz Sandstone)
Arenite (SiO2 based)
sedimentary
Granite
Granite (Felsic Plutonic Rock)
igneous
Man-made Slag (Industrial Byproduct)
Anthropogenic Glassy Residue
not a natural rock
Pink Granite
Phaneritic Felsic Intrusive Igneous Rock
igneous
Aquamarine
Beryl (Be3Al2Si6O18), specifically the blue-green variety
Mineral
Sandstone (Quartzose)
Arenite (SiO2 based)
sedimentary
Chalcedony (Grey/White Agate)
Silicon Dioxide (SiO₂)
mineral
Beryl (Emerald Variety)
Beryllium aluminum silicate (Be3Al2(SiO3)6) with chromium/vanadium traces
mineral
Aquamarine
Beryl (Be3Al2Si6O18 with iron traces)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Slag Glass
Anthropogenic Amorphous Silicon Dioxide
mineral
Sandstone (Water-worn Cobble)
Arenite (SiO2 based)
sedimentary
Sandstone (Stream-rounded)
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone (Quartz-rich)
Arenite (SiO2 based)
sedimentary
Chert (Nodular or Massive Variety)
Cryptocrystalline Quartz (SiO2)
sedimentary