Quartz
Silicon Dioxide (SiO2)
Category
Browse mineral (gemstone variety of beryl) specimens identified by the Rock Identifier community.
Quartz
Silicon Dioxide (SiO2)
Agate
Silicon Dioxide (SiO2)
Moonstone (bead form)
Potassium Aluminum Silicate (KAlSi3O8) - a variety of Orthoclase Feldspar
Quartz (Milky or Cloudy variety)
Silicon Dioxide (SiO2)
Chrysocolla
Hydrated copper silicates (Cu,Al)2H2Si2O5(OH)4·nH2O
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Quartz (likely) / Siliceous rock with quartz phenocrysts (if a rock fragment)
Quartz (SiO₂)
Rose Quartz
Silicon Dioxide (SiO2)
Peridot
Olivine (Mg,Fe)2SiO4
Quartzite (specifically Milky Quartz variety)
Quartz (SiO2)
Carnelian (Chalcedony variety)
SiO2 (Silicon Dioxide)
Quartz (Milky or Cloudy Quartz)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Pink Tourmaline (Rubellite)
Elbaite - Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3OH
Labradorite (Feldspar)
Labradorite: (Ca,Na)(Al,Si)4O8
Smoky Quartz Cluster
Smoky Quartz (Silicon Dioxide - SiO2)
Orange Quartzite / Carnelian Agate
Silicon Dioxide (SiO2)
Pink Pearl
Calcium Carbonate (Aragonite/Calcite) with Conchiolin (CaCO3)
Rose Quartz
Silicon dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Plagioclase Feldspar
Plagioclase Feldspar Series (NaAlSi3O8 - CaAl2Si2O8)
Amber
Succinite (fossilized resin)
Carnelian Agate
Silicon Dioxide (SiO2) with iron oxide impurities
Quartz (Druzy or Crystalline variety)
Silicon Dioxide (SiO2)
Quartz (Milky and Bull Quartz)
Silicon Dioxide (SiO2)
Black Tourmaline (Schorl)
Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)
Agate
Silicon dioxide (SiO2) - variety Chalcedony
Chert (often referred to as Flint or Jasper when pigmented)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions
Chert / Jasper
Microcrystalline Quartz (SiO2)
Mixed Tumbled Gemstones (Agate, Aventurine, Pyrite, etc.)
Multiple (principally Silicon Dioxide SiO2 and Iron Disulfide FeS2)
Quartz / Rock Crystal
Silicon Dioxide (SiO2)
Jasper Breccia
Silicon Dioxide (SiO2) with impurities
Fluorite and Red Jasper
Fluorite (Calcium Fluoride, CaF2) and Red Jasper (Silicon Dioxide, SiO2)
Peridot
Olivine ((Mg,Fe)2SiO4)
Moonstone
Orthoclase (KAlSi3O8), a variety of potassium feldspar
Quartz (Milky Quartz)
Silicon Dioxide (SiO₂)
Yellow Quartz (Citrine or Yellow Chalcedony)
Silicon Dioxide (SiO2)
Jasper
Jasper (Silica/Silicon Dioxide, SiO2)
Green Aventurine
Aventurine (a variety of Quartz, SiO2 with fuchsite inclusions)
Citrine Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Dalmatian Stone (Dalmatian Jasper)
Dalmatian Stone (A variety of Perthite / Aplite)