Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Category
Metamorphic Or Mineral
Browse metamorphic or mineral specimens identified by the Rock Identifier community.
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Rhodochrosite
Manganese carbonate (MnCO3)
mineral
Quartz (specifically Milky/Gray Quartz)
Silicon Dioxide (SiO2)
mineral
Blue Quartzite (River Pebble)
Quartzite (primarily SiO2 with Dumortierite or Crocidolite inclusions)
metamorphic
Green Aventurine and Clear Quartz
Green Aventurine (Silicon Dioxide - SiO2 with Fuchsite inclusions); Clear Quartz (Silicon Dioxide - SiO2)
Mineral
Tiger's Eye (Tumbled Blue/Black-Golden variety)
Pseudomorph of Quartz after Crocidolite (SiO2 with Iron inclusions)
metamorphic
Pebble
Clast (specifically a granule or small pebble)
Sedimentary
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Mica Schist
Medium-grade regional metamorphic rock (composition varies)
metamorphic
Blue Quartzite
Quartzite (specifically a variety enriched with blue-coloring minerals)
Metamorphic Rock
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
mineral
Sunstone
Plagioclase Feldspar (specifically Oligoclase variety with hematite or goethite inclusions) Chemical Formula: (Ca,Na)(Al,Si)2Si2O8
Mineral
Jadeite
Jadeite (NaAlSi2O6)
metamorphic
Emerald in Matrix
Emerald (Beryllium Aluminum Silicate), Be3Al2(SiO3)6
mineral
Gneiss (specifically a water-worn pebble)
Gneiss
metamorphic
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with iron inclusions)
metamorphic
Tiger's Eye
Pseudomorph of quartz after crocidolite (SiO2)
metamorphic
Emerald in Matrix
Beryl (Be3Al2Si6O18) with trace amounts of Chromium/Vanadium
mineral
Peach Moonstone
Orthoclase Feldspar (KAlSi3O8)
mineral
Quartzite
Quartzite (primarily Silicon Dioxide, SiO2)
metamorphic
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
mineral
River Quartz Pitting/Cobble
Silicon Dioxide (SiO2)
mineral
Clear Quartz Crystal
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz (with Iron staining)
Silicon Dioxide (SiO2)
mineral
Agate
Silicon Dioxide (SiO2) - Chalcedony variant
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Quartz (Iron-Stained Quartz Pebble)
Silicon Dioxide (SiO2)
mineral
Rough Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Quartz (Peach/Orange variety)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Orange Quartz (Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
mineral
Amethyst (Raw Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Ruby
Corundum (Al2O3 with Chromium)
mineral
Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz (Milky/River Quartz)
Silicon Dioxide (SiO2)
mineral
Sodalite (blue beads) and Clear Quartz (clear beads)
Sodalite: Na4Al3Si3O12Cl; Quartz: SiO2
mineral
Quartz / Quartzite
Silicon Dioxide (SiO2)
Mineral / Metamorphic
Beryl (Emerald Variety)
Beryllium aluminum silicate (Be3Al2(SiO3)6) with chromium/vanadium traces
mineral
Blue Quartz (Aventurine)
Silicon Dioxide (SiO2) with Crocidolite or Magnesio-riebeckite inclusions
metamorphic