Quartz
Quartz (SiO2 - Silicon Dioxide)
Category
Browse mixed (predominantly sedimentary and igneous) specimens identified by the Rock Identifier community.
Quartz
Quartz (SiO2 - Silicon Dioxide)
Epidote
Epidote Group (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
Amethyst (Digital/Conceptual Representation)
Amethyst (Silicon Dioxide with iron impurities, SiO2)
Jadeite
NaAlSi2O6 (Sodium Aluminum Silicate)
Flower Agate
Chalcedony (cryptocrystalline Quartz) with Spherulite inclusions; SiO2
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Amethyst (Chevron or Dream Amethyst variety)
Tectosilicate Silicon Dioxide (SiO2) with iron impurities
Prase Quartz on Feldspar
Quartz (Silicon Dioxide, SiO2) with Hedenbergite inclusions on Potassium Feldspar (KAlSi3O8)
Rough Diamond
Pure Carbon (C)
Carnelian Agate
Silicon Dioxide (SiO2) - Carnelian variety of Chalcedony
Nephrite Jade
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)
Blue Aventurine
Silicon Dioxide (SiO2) with inclusions of Dumortierite
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Green Aventurine
Quartz (Silicon Dioxide) with Fuchsite inclusions (K(Al,Cr)2(AlSi3O10)(OH)2)
Larimar
Blue Pectolite (NaCa2Si3O8(OH))
Silver (Native Silver)
Native Silver (Ag)
Aventurine (Green)
Aventurine Quartz (SiO2 + Fuchsite inclusions)
Chrysocolla in Jasper (Chryso-Jasper)
Cu2-xAlx(H2-xSi2O5)(OH)4·n H2O (Chrysocolla) + SiO2 (Jasper)
Amethyst
Silicon Dioxide with Iron impurities (SiO2)
Diamond (Princess Cut Gemstone)
Carbon (C)
Rose Quartz
Rose Quartz (Silicon Dioxide, SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese
Fire Agate
Chalcedony (Silicon Dioxide, SiO2) with Limonite/Goethite
Conglomerate with Quartz Inclusions
Conglomerate (clastic sedimentary rock) with internal Quartz (SiO2)
Chalcedony (Common Opal variant)
Silicon dioxide (SiO2) with varying levels of hydration
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
Quartz (Pale Rose or Milky Variety)
Silicon Dioxide (SiO2)
Graphite
Graphite (C)
White Chalcedony (Agate)
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartz (Milky Variant)
Silicon Dioxide (SiO2)
Agate Nodule / Weathered Chert
SiO2 (Silicon Dioxide - Microcrystalline Quartz)
Magnetite (Lodestone variety)
Magnetite (Fe3O4)
Milky Quartz
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Gneiss
Gneiss (High-grade metamorphic rock)
Pyrite (Fool's Gold) Cube
Iron Sulfide (FeS2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Quartz (Druzy)
Silicon Dioxide (SiO2)
Pyrite
Iron Pyrite (FeS2)
Dalmatian Stone
Dalmatian Jasper (Aplitic Rock)
Quartz (Milky/Crystalline variety)
Silicon Dioxide (SiO2)