Amethyst
Quartz (SiO2) - Amethyst variety
Category
Browse mineral (gemstone variety of beryl) specimens identified by the Rock Identifier community.
Amethyst
Quartz (SiO2) - Amethyst variety
Quartz (Milky/Crystalline variety)
Silicon Dioxide (SiO2)
Quartz (Smoky/Milky variety)
Silicon Dioxide (SiO2)
Agate (Carnelian / Chalcedony)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Milky Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
Amazonite (Green Feldspar)
Microcline (variety Amazonite), Chemical Formula: K(AlSi3O8)
Smoky Quartz
Silicon Dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Yellow Jasper
Silicon Dioxide (SiO2) with goethite or limonite inclusions
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Almandine Garnet in Schist
Almandine, Fe3Al2(SiO4)3
Tumbled amethyst
Quartz, purple variety (SiO₂), colored by trace iron and irradiation
Sodalite
Na8Al6Si6O24(Cl,OH)2
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Red Jasper
Quartz (SiO2) with iron oxide inclusions
Eudialyte
Eudialyte (Na4(Ca,Ce)2(Fe2+,Mn,Y)ZrSi8O22(OH,Cl)2)
Tumbled carnelian
Carnelian, a red-orange variety of chalcedony (microcrystalline quartz, SiO₂)
Kunzite
Spodumene (LiAlSi2O6), variety Kunzite
Clear Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon dioxide (SiO2)
Ruby / Red Tourmaline
Corundum (Al2O3) or Elbaite (Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)4)
Turquoise
Hydrous phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O
K-Feldspar (Microcline / Orthoclase)
Potassium Feldspar (KAlSi3O8)
Pink Feldspar
Orthoclase Feldspar (KAlSi3O8)
Carnelian (a variety of Chalcedony)
Silicon Dioxide (SiO2) with iron oxide impurities
Chalcedony (Yellow Chert / Agate)
Quartz (Silicon Dioxide - SiO2)
Quartz (Milky or Smoky Quartz variety)
Silicon Dioxide (SiO2)
Amazonite
KAlSi3O8 (Potassium Feldspar, variety of Microcline)
Yellow Agate (Banded Chalcedony)
Silicon Dioxide (SiO2)
Granitic Pegmatite
Granitic Pegmatite with Quartz and Feldspar
Quartz
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Sunstone
Oligoclase (a variety of Plagioclase Feldspar) - (Na,Ca)(Si,Al)4O8
Blue Chalcedony
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Red Jasper
Opaque microcrystalline Quartz (SiO2 with Fe2O3 inclusions)
Jasper with Iron Staining
Silicon Dioxide (SiO2) with impurities
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron inclusions
Quartz (Smoky/Granular variety)
Silicon Dioxide (SiO2)
Chalcedony (Agate/Chert variety)
Silicon Dioxide (SiO₂)