Pyrope Garnet
Magnesium aluminum silicate (Mg3Al2Si3O12)
Category
Browse mixed: igneous and sedimentary specimens identified by the Rock Identifier community.
Pyrope Garnet
Magnesium aluminum silicate (Mg3Al2Si3O12)
Quartz (River Pebble)
Silicon Dioxide (SiO2)
Olivine in Basalt matrix
Peridotite (Mg, Fe)2SiO4
Granite
Granite
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Anyolite (Ruby in Zoisite)
Zoisite with inclusions of Hornblende and Ruby (Ca2Al3(SiO4)3(OH))
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
Clear Quartz Point
Silicon Dioxide (SiO2)
Granite
Granite (Mainly Quartz, Feldspar, and Mica)
Arfvedsonite in Quartz
Arfvedsonite [Na3(Fe2+4Fe3+)Si8O22(OH)2] often hosted in Quartz or Feldspar
Granite
Granite
Yellow Agate
Silicon Dioxide (SiO2)
Sodalite
Na8(Al6Si6O24)Cl2
Labradorite
Labradorite (a calcium-enriched feldspar mineral), (Ca, Na)(Al, Si)4O8
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Orthoclase Feldspar
Potassium Aluminum Silicate (KAlSi3O8)
Peridot
Olivine ((Mg, Fe)2SiO4)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Sodalite
Na8(Al6Si6O24)Cl2
Arfvedsonite (often mistakenly sold as Astrophyllite)
Arfvedsonite [Na3(Fe2+)4Fe3+Si8O22(OH)2]
Labradorite
Labradorite (Ca,Na)(Al,Si)4O8
Potassium Feldspar
Orthoclase (KAlSi3O8)
Sodalite
Sodalite [Na8(Al6Si6O24)Cl2]
Rose Quartz
Silicon dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Rose Quartz
Quartz (Silicon Dioxide, SiO2) with trace amounts of titanium, iron, or manganese
Banded Agate
Agate (Silicon Dioxide - SiO2)
Pink Feldspar
Orthoclase Feldspar (KAlSi3O8)
Quartz (Citrine or Smoky variant)
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Granite
Felsic Plutonic Rock (primarily SiO2)
Granite
Phaneritic plutonic rock (primarily Quartz, Feldspar, and Mica)
Granite
Intrusive igneous rock (SiO2 range 65-75%)
Biotite (Black Mica)
Biotite (K(Mg,Fe++)3AlSi3O10(OH,F)2)
Olivine
Magnesium Iron Silicate ((Mg, Fe)₂SiO₄)
Granite
Granite (Mainly Quartz, Feldspar, and Mica/Amphibole)
Blue Sapphire (likely costume glass imitation)
Corundum (Al2O3) with iron/titanium impurities
Olivine (Peridot)
Magnesium Iron Silicate (Mg, Fe)2SiO4
Olivine (Peridot)
Magnesium Iron Silicate ((Mg, Fe)2SiO4)
Amazonite
K(AlSi3O8), Microcline (potassium feldspar)
Sodalite
Sodalite - Na8(Al6Si6O24)Cl2
Milky Quartz
Silicon Dioxide (SiO2)
Labradorite
Labradorite (Ca, Na)(Al, Si)4O8