Carnelian Agate
Chalcedony (SiO2 with Iron Oxide inclusions)
Category
Browse mineral, jewelry specimens identified by the Rock Identifier community.
Carnelian Agate
Chalcedony (SiO2 with Iron Oxide inclusions)
Carnelian
Silicon dioxide (SiO2)
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Amethyst
Silicon Dioxide (SiO2) with trace Iron (Fe3+)
Quartz
Silicon Dioxide (SiO2)
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Jasper
Microcrystalline quartz (SiO2)
Petrified Wood
Silicified Wood (primarily SiO2)
Quartz with Schist Inclusion
Crystalline Silicon Dioxide (SiO2) with Muscovite/Biotite Schist
Garden Quartz (Lodolite)
Quartz with inclusions (SiO2 + various inclusions such as Chlorite, Hematite, or Feldspar)
Green Aventurine
Aventurine Quartz (SiO2 containing Fuchsite)
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Green Quartz (Aventurine or Prase)
Silicon Dioxide (SiO2) with inclusions
Blue Zircon
Zircon (Zirconium Silicate), ZrSiO4
Larimar
Pectolite (NaCa2Si3O[OH])
Blue Chalcedony
Silicon Dioxide (SiO2)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Yellow Aventurine
Silicon Dioxide (Quartz with Mica inclusions) SiO2
Quartz with Inclusions
Silicon Dioxide (SiO2) with various mineral inclusions
Snowflake Obsidian
Volcanic Glass with Cristobalite Inclusions
Plume Agate or Moss Agate
Agate (SiO2)
Red Jasper
Microcrystalline Quartz (Chalcedony), SiO2
Black Obsidian
Volcanic glass
Milky Quartz
Silicon dioxide (SiO2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Almandine Garnet
Almandine, Fe3Al2(SiO4)3
Fossil Shark Tooth
Phylum Chordata, Class Chondrichthyes (Possibly Cretalamna or Otodus)
Fluorite (Rainbow Fluorite)
Calcium Fluoride (CaF2)
Jasper
Silicon dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Purple Agate (Dyed Chalcedony)
SiO2 (Silicon Dioxide) with organic dyes
Peach Moonstone
Potassium Aluminum Silicate (KAlSi3O8)
Snowflake Obsidian
Volcanic Glass with Spherulite inclusions (mainly Cristobalite)
Goldstone
Not a natural mineral or rock. It is an ornamental glass.
Blue Lace Agate
Chalcedony (SiO2) with trace minerals
Aquamarine
Beryl (Be3Al2Si6O18) with trace Iron (Fe2+)
Dalmatian Stone
Dalmatian Jasper / Aplite
Garnet
Garnet Group (Silicate Minerals), formula varies e.g., Almandine Fe3Al2(SiO4)3
Carnelian (Carnelian Agate)
Cryptocrystalline Quartz (SiO2 with Hematite impurities)
Dragon Vein Agate
Chalcedony (cryptocrystalline Quartz), SiO2
Dyed Quartz (often sold as 'Blue Quartz' or 'Blue Agate')
Silicon Dioxide (SiO2) with artificial pigment
Crackled Quartz (Dyed)
Silicon Dioxide (SiO2)