Chalcedony
Silicon Dioxide (SiO2)
Category
Browse mineral (gemstone variety of beryl) specimens identified by the Rock Identifier community.
Chalcedony
Silicon Dioxide (SiO2)
Amethyst
Amethyst (Quartz variety), Silicon Dioxide (SiO2)
Amazonite
K(AlSi3O8) - Microcline (Lead-bearing variety)
Blue Apatite
Calcium Fluorophosphate - Ca5(PO4)3F
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
Quartz (Smoky/Clear variety)
Silicon Dioxide (SiO2)
Smoky Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz
Silicon Dioxide (SiO2)
Amethyst (Variety of Quartz)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Sodalite
Na8(Al6Si6O24)Cl2
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon dioxide (SiO2)
Satin Spar (Gypsum)
Calcium Sulfate Dihydrate (CaSO4·2H2O)
Clear Quartz (Rock Crystal)
Quartz (Silicon Dioxide - SiO2)
Jasper
Silicon dioxide (SiO2)
Geode (Quartz chalcedony variety)
SiO2 (Silicon Dioxide)
Quartz
Silicon Dioxide (SiO2)
White Quartz
Silicon Dioxide (SiO2)
Quartz (Milky/Smoky variety)
Silicon Dioxide (SiO2)
Sunstone
Orthoclase or Oligoclase Feldspar (Na,Ca)(Al,Si)4O8
Pyrite
Iron Disulfide (FeS2)
Black Opal
Hydrated Silica (SiO2·nH2O)
Peach Moonstone
Orthoclase (Potassium Aluminum Silicate), KAlSi3O8
Quartz
Silicon Dioxide (SiO2)
Clear Quartz
Silicon dioxide (SiO2)
Amazonite
Amazonite (KAlSi3O8) - a variety of Microcline Feldspar
Polished orbicular jasper
Silica-rich microcrystalline quartz/chalcedony (SiO₂), with iron oxides and green alteration minerals
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Grey Quartz (likely Smoky Quartz or Milky Quartz)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Red Jade (Dyed Quartzite)
Silicon Dioxide (SiO2) - variety Quartzite
Chalcedony (Yellow/Honey variety)
Microcrystalline Quartz (SiO2)
Quartz (Milky/Crystalline variety)
Silicon Dioxide (SiO2)
Quartz (Smoky/Milky variety)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Chalcedony (Quartz Var.)
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Chalcedony
Silicon Dioxide (SiO2)
Red Garnet
Pyrope or Almandine (Silicate group, X3Y2(SiO4)3)