Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)
metamorphic
Category
Metamorphic Or Mineral
Browse metamorphic or mineral specimens identified by the Rock Identifier community.
Amazonite
K(AlSi3O8) - Lead-bearing Microcline (Tectosilicate)
mineral
Nephrite Jade
Ca2(Mg,Fe)5Si8O22(OH)2
metamorphic
Green Aventurine
Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
metamorphic
Green Schist
Greenschist (composed of Chlorite, Actinolite, and Epidote)
metamorphic
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Banded Agate (with possible Chalcedony layers)
Silicon dioxide (SiO2)
sedimentary
Jade (Jadeite/Nephrite)
NaAlSi2O6 (Jadeite) / Ca2(Mg,Fe)5Si8O22(OH)2 (Nephrite)
metamorphic
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Clear Quartz Fragment
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Nuummite
Nuummite (Orthorhombic amphiboles: Anthophyllite and Gedrite)
metamorphic
Gneiss (High-Grade Metamorphic Rock)
Gneiss (primarily composed of Quartz, Feldspar, and Mica/Amphiboles)
metamorphic
Emerald in Schist (Raw/Tumbled)
Beryllium Aluminum Silicate (Be3Al2Si6O18) with Chromium/Vanadium impurities in Mica Schist
metamorphic
Garnet (likely Almandine)
Almandine Garnet, Fe3Al2(SiO4)3
mineral
White Marble
Recrystallized Calcite (CaCO3)
metamorphic
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals like Antigorite, Lizardite, and Chrysotile)
metamorphic
Rough Emerald in Matrix
Beryl (Be3Al2Si6O18) with trace Chromium/Vanadium
mineral
Quartzite with Iron Mineral Banding
Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3) staining
metamorphic
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
metamorphic
Yellow Aventurine (Quartz Quartzite)
Silicon Dioxide with Mica inclusions (SiO2 + KAl2(AlSi3O10)(OH)2)
Metamorphic
Charoite
Charoite, K(Ca,Na)2Si4O10(OH,F)·H2O
metamorphic
Mica Schist
Mica Schist (KAl2(AlSi3O10)(OH)2 in Matrix)
metamorphic
Quartz (River Pebble)
Silicon Dioxide (SiO2)
mineral
Sapphire (Raw/Rough)
Corundum (Al2O3)
mineral
Micaceous Schist
Mica Schist (primarily Muscovite or Biotite KAl2(AlSi3O10)(OH)2)
metamorphic
Charoite
Charoite (Hydrated potassium, sodium, calcium, barium, strontium silicate hydroxide fluoride)
metamorphic
Gneiss
Gneiss
metamorphic
Greenstone
Metabasalt / Greenschist facies rock
metamorphic
Gneiss (Granitic Gneiss)
Gneiss (composed primarily of Quartz, Feldspar, and Mica/Amphibole)
metamorphic
Petrified Wood
Silicified wood (primarily SiO2 - Silicon Dioxide/Quartz)
metamorphic
Tiger's Eye
Pseudomorph of quartz after crocidolite (SiO2 with iron oxide inclusions)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Nephrite Jade
Ca2(Mg, Fe)5Si8O22(OH)2
metamorphic
Clear Quartz
Silicon dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Pearl and Garnet Glass
Calcium Carbonate (CaCO3) for pearl; Silicon Dioxide (SiO2) for glass
mineral and glass
Ruby and Diamond in Gold Setting
Corundum (Al2O3) and Diamond (C)
mineral
Garnet
Garnet Group (complex nesosilicates with general formula X3Y2(SiO4)3, where X can be Ca, Mg, Fe2+, Mn2+ and Y can be Al, Fe3+, Cr3+, V3+)
Mineral
Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Ruby and Diamond Heart Pendant
Corundum (Al2O3) and Diamond (C)
mineral