Green Aventurine
Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Category
Browse mineral, jewelry specimens identified by the Rock Identifier community.
Green Aventurine
Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Eudialyte in Matrix
Eudialyte [Na15Ca6(Fe,Mn)3Zr3(Si25O73)(O,OH,H2O)3(Cl,OH)2]
Pyrite (Fool's Gold) Cube
Iron Sulfide (FeS2)
Azurite and Malachite on Matrix
Azurite: Cu3(CO3)2(OH)2; Malachite: Cu2CO3(OH)2
Azurite
Azurite (Cu3(CO3)2(OH)2)
Fluorite
Calcium Fluoride (CaF2)
Quartz Pebble
Silicon Dioxide (SiO2)
Green Aventurine
Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Rose Quartz
Silicon Dioxide (SiO2)
Aventurine
Aventurine Quartz (SiO2)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Carnelian Agate
Silicon Dioxide (SiO2) with iron oxide inclusions
Carnelian
Carnelian (Microcrystalline Quartz, SiO2 with Fe2O3 impurities)
Carnelian
Carnelian (SiO2)
Aventurine
Aventurine (Silicon Dioxide with Fuchsite inclusions) - SiO2
Carnelian (polished)
Carnelian (variety of Chalcedony), SiO2
Green Aventurine
Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Green Aventurine
Aventurine Quartz (SiO2 with inclusions)
Green Fluorite
Calcium Fluoride (CaF2)
Beryl (Emerald variety in host rock)
Be3Al2(SiO3)6 (Silicate mineral)
Fancy Jasper
Silicon Dioxide (SiO2) with mineral inclusions
Pyrite in Shale
Iron Sulfide (FeS2) in Sedimentary Matrix
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Chalcedony (Carnelian/Jasper Pebble)
Cryptocrystalline Quartz (SiO2)
Malachite
Copper carbonate hydroxide [Cu2CO3(OH)2]
Quartz
Silicon Dioxide (SiO2)
Fire Agate
Silicon Dioxide (SiO2) with layers of Limonite/Goethite
Fossilized Coral (Petoskey Stone or similar Hexagonaria variant)
Hexagonaria percarinata (Fossilized Coral)
Dalmation Stone (often called Dalmatian Jasper)
Peralkaline Rock (Microgranite/Aplite), SiO2 with inclusions of Arfvedsonite
Green Fluorite
Calcium Fluoride (CaF2)
Quartz (Sunstone-like Chalcedony)
Silicon Dioxide (SiO2)
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
Chrysocolla
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O
Specular Hematite
Iron(III) oxide (Fe2O3)
Malachite
Copper(II) carbonate hydroxide, Cu2CO3(OH)2
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) in matrix
Blue Quartzite (Aventurine variety)
Silicon Dioxide (SiO2) with inclusions of Dumortierite or Magnesio-riebeckite
Fossilized Shark Tooth
Fossil Chondrichthyes (various genera such as Carcharias or Odontaspis)
Obsidian
Extrusive igneous volcanic glass (rich in SiO2)
Obsidian
Extrusive igneous volcanic glass