Carnelian
Silicon Dioxide, variety of chalcedony (SiO2)
Category
Browse mineral (gemstone variety of beryl) specimens identified by the Rock Identifier community.
Carnelian
Silicon Dioxide, variety of chalcedony (SiO2)
Larimar
Pectolite (NaCa2Si3O8(OH))
Chert / Flint
Silicon dioxide (SiO2)
Labradorite
Labradorite (Plagioclase Feldspar Series) - (Ca, Na)(Al, Si)4O8
Tektite (likely indochinite)
Natural silica-rich impact glass; predominantly amorphous SiO₂ with aluminum, iron, magnesium, calcium, and sodium
Jasper
Silicon dioxide (SiO2)
Chert (Flint Nodules)
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Tumbled quartz pebble
Quartz (silicon dioxide, SiO₂)
Rose Quartz
Silicon dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Chalcedony
Silicon Dioxide (SiO₂)
Red Jasper
Silicon Dioxide (SiO2) with Ferric Iron inclusions
Smoky Quartz
Silicon Dioxide (SiO2)
Pink Tourmaline (Rubellite)
Elbaite - Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3OH
Jasper
Silicon Dioxide (SiO2) with impurities
Chert (Serpentinized)
Silicon Dioxide (SiO2) with mineral staining
Plagioclase Feldspar
Plagioclase Feldspar Series (NaAlSi3O8 - CaAl2Si2O8)
Polished Black Obsidian
Volcanic Glass (70-75% SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Jasper (Red Jasper)
Silicon Dioxide (SiO₂)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Amber
Succinite (fossilized resin)
Quartz (Druzy or Crystalline variety)
Silicon Dioxide (SiO2)
Amethyst cluster
Quartz, SiO₂; purple coloration is caused mainly by iron-related defects and natural irradiation
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions
Citrine Quartz
Silicon Dioxide (SiO2)
Carnelian Agate
Silicon Dioxide (SiO2) with iron oxide impurities
Moonstone (bead form)
Potassium Aluminum Silicate (KAlSi3O8) - a variety of Orthoclase Feldspar
Moss Agate
Moss Agate (a variety of Chalcedony, SiO ₂)
Quartz (milky variety)
SiO2 (Silicon Dioxide)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Blue Lace Agate
Silicon Dioxide (SiO2) - Chalcedony variety
Angelite
Anhydrite (Calcium Sulfate, CaSO4)
Black Tourmaline
Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)
Jasper Breccia
Silicon Dioxide (SiO2) with impurities
Jasper
Jasper (Silica/Silicon Dioxide, SiO2)
Agate
Silicon Dioxide (SiO2) - variety: Chalcedony
Carnelian (Orange Chalcedony)
Silicon Dioxide (SiO2) - variety of Chalcedony
Tumbled Agate
Silicon Dioxide (Chalcedony variety), SiO2