Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Category
Metamorphic
Browse metamorphic specimens identified by the Rock Identifier community.
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Green Aventurine
Silicon Dioxide (SiO2) with Fuscite inclusions
mineral
Quartz / Clear Quartz
Silicon Dioxide (SiO2)
mineral
Serpentinite
Serpentinite (composed primarily of mineral group (Mg,Fe,Ni,Al)3Si2O5(OH)4)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite in Matrix
Iron Disulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
mineral
Amazonite
Microcline (variety Amazonite) - K(AlSi3O8)
mineral
Specular Hematite
Hematite (Fe2O3)
mineral
Ferruginous Quartz
Silicon Dioxide (SiO2) with Hematite/Limonite inclusions
mineral
Red Garnet
Almandine Garnet (Fe3Al2(SiO4)3)
mineral
Moonstone
Orthoclase Feldspar ((K,Na)AlSi3O8)
mineral
Green Aventurine
Silicon dioxide (SiO2) with inclusions of Fuchsite mica
metamorphic
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Alexandrite in Matrix
Chrysoberyl (BeAl2O4 with Chromium)
mineral
Amethyst (Purple), Sulfur (Yellow), and Blue Apatite
SiO2 (Quartz), S (Native Sulfur), Ca5(PO4)3(F,Cl,OH) (Apatite Group)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite (mica)
Mineral (variety of Quartz)
Peach Aventurine
Silicon Dioxide (SiO2) with Hematite/Goethite inclusions
mineral
Smoky Quartz
Quartz (Silicon Dioxide) - SiO2
mineral
Galena
Lead(II) sulfide (PbS)
mineral
Quartz Vein / Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Common or Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Tiger's Eye
Silicon Dioxide with inclusions (SiO2)
mineral
Aventurine
Aventurine (Silicon Dioxide with Fuchsite inclusions) - SiO2
mineral
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Quartz River Cobble
Silicon Dioxide (SiO2)
Mineral (Primary constituent)
Citrine (Heat-treated or Natural Quartz)
Silicon Dioxide (SiO2)
mineral
Tiger's Eye (Oeil de Tigre)
Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)
metamorphic
Tiger's Eye (Blue/Black variety, also known as Hawk's Eye)
Silicified Crocidolite (Silicon Dioxide with inclusions, SiO2)
metamorphic
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
metamorphic
Orthoclase Feldspar
KAlSi3O8 (Potassium aluminum silicate)
mineral
Orange Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Schorl (Black Tourmaline)
Sodium Iron Aluminum Borosilicate Hydroxide; NaFe2+3Al6Si6O18(BO3)3(OH)3OH
mineral
Yellow Quartz (Citrine or Quartzite Pebble)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky or Common Quartz)
Silicon Dioxide (SiO2)
mineral
Amazonite
KAlSi3O8 (Potassium aluminum silicate - blue-green variety of Microcline)
mineral
Green Aventurine
Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
mineral