Granite
Phaneritic intrusive igneous rock
igneous
Category
Crystal
Browse crystal specimens identified by the Rock Identifier community.
Almandine Garnet in Schist
Almandine Garnet (Fe3Al2(SiO4)3) in Mica Schist
metamorphic
Schorl (Black Tourmaline) in Granite
NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
igneous
Yellow Jasper
Silicon Dioxide (SiO2) - variety of Chalcedony
sedimentary
Barite (Desert Rose or Cockscomb variety)
Barium Sulfate (BaSO4)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Amethyst
Amethyst (Silicon Dioxide - SiO2)
mineral
Blue Apatite
Apatite group (Ca5(PO4)3(F,Cl,OH))
mineral
Quartz (Milky/Sugar variety)
Silicon Dioxide (SiO2)
mineral
Clear Quartz Cluster
Quartz (Silicon Dioxide - SiO2)
mineral
Quartz (Gravel)
Silicon Dioxide (SiO2)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Man-made Dyed Aura Quartz
Silicon Dioxide (SiO2) with metallic coating/dye
mineral
Opalite
Synthetic Opalised Glass
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Blue Goldstone
Aventurine Glass
man-made glass
Lapis Lazuli
Lapis lazuli (Complex silicate mixture including Lazurite, Calcite, and Pyrite)
metamorphic
Yellow Chalcedony (common opal or chert variant)
Silicon Dioxide (SiO2)
sedimentary (mineraloid/microcrystalline quartz)
Moss Agate
Silicon Dioxide with inclusions (SiO2 + Mn/Fe/Chlorite)
mineral
Mookaite Jasper
Silicon Dioxide (SiO2) - variety of Chert/Jasper
sedimentary
Green Aventurine (Tumbled Quartz)
Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)3Si3O10(OH)2)
metamorphic
Green Jasper
Silicon Dioxide (SiO2) with iron silicate inclusions
sedimentary
Mahogany Obsidian
Obsidian (Volcanic Glass) with Hematite/Magnetite inclusions
igneous
Sunstone with Moonstone (Peach Moonstone)
Orthoclase Feldspar (KAlSi3O8)
mineral
Sodalite
Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2)
mineral
Dream Amethyst (Chevron Amethyst)
Silicon Dioxide (SiO2) with iron impurities
mineral
Quartz Pebble (with Iron Staining)
Crystalline Silicon Dioxide (SiO2)
mineral
Tiger's Iron
Pseudomorphic Quartz Aggregate (contains SiO2 with Fe2O3 and FeOOH)
metamorphic
Green Aventurine
Silicon dioxide (SiO2) with Fuchsite inclusions
metamorphic
Amethyst (Tumbled)
Crystalline Quartz (SiO2 with iron impurities)
mineral
Jasper (likely Ocean Jasper or Variegated Jasper)
Silicon Dioxide (SiO2) with impurities
sedimentary
Green Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Red Jasper (possibly Carnelian)
Silicon Dioxide (SiO2) with Hematite impurities
mineral
Red Jasper
Jasper (Silicon Dioxide based crypto-crystalline Quartz with Iron inclusions)
sedimentary
Fancy Jasper
Silicon Dioxide (SiO2) with impurities
mineral
Green Aventurine
Aventurine Quartz (SiO2 + Muscovite/Fuchsite)
metamorphic
Amazonite (with smoky quartz/red jasper inclusions)
Tectosilicate - Microcline Feldspar (KAlSi3O8)
Mineral
Carnelian
Carnelian (a variety of Chalcedony) - SiO2
mineral
Carnelian
Carnelian (Microcrystalline Quartz, SiO2)
Mineral
Desert Rose
Gypsum (Selenite) variety, CaSO4·2H2O
mineral
Blue Quartz (Aventurine)
Silicon Dioxide (SiO2) with Crocidolite or Magnesio-riebeckite inclusions
metamorphic