Foliated Metamorphic Rock (likely Gneiss or Schist)
Gneissic Metamorphic Rock
metamorphic
Category
Mineral (Specifically A Gemstone Variety)
Browse mineral (specifically a gemstone variety) specimens identified by the Rock Identifier community.
Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
mineral
Quartz (Milky Quartz)
Quartz (SiO2 - Silicon Dioxide)
Mineral
Moonstone (Blue Flash)
Potassium Aluminum Silicate (KAlSi3O8), a variety of Orthoclase Feldspar
mineral
Sodalite
Na8(Al6Si6O24)Cl2
mineral
Milky Quartz
Quartz (Silicon Dioxide) - SiO2
mineral
Quartz (Milky or Rough Variety)
Silicon Dioxide (SiO2)
mineral
Beryl (Emerald Variety)
Beryllium aluminum silicate (Be3Al2(SiO3)6) with chromium/vanadium traces
mineral
Sunstone
Orthoclase or Oligoclase Feldspar (Na,Ca)(Al,Si)4O8
mineral
Aquamarine (Pale variety)
Beryl (Be3Al2Si6O18)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Lepidolite with Quartz
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
mineral
Amethyst
Amethyst (a variety of Quartz, SiO2)
Mineral
Agate (various color varieties)
SiO₂ (Silicon Dioxide)
Mineral (specifically a variety of Chalcedony, which is a microcrystalline quartz)
Watermelon Tourmaline
Elbaite - Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3OH
mineral
Amazonite
Amazonite (KAlSi3O8, a triclinic variety of Potassium Feldspar)
mineral
Clear Quartz (Rock Crystal)
Quartz (Silicon Dioxide - SiO2)
mineral
Agate Geode
Banded Chalcedony (Silicon Dioxide, SiO2) with Quartz crystals
mineral
Flower Agate (Plume Agate)
Chalcedony (Silicon Dioxide) with Spherulitic Inclusions - SiO2
mineral
Chalcedony (Carnelian variety)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Jasper (with Manganese or Iron inclusions)
Silicon Dioxide (SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Grey Quartz (likely Smoky Quartz or Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Limestone (specifically Fossiliferous or Crinoidal Limestone)
Calcium Carbonate (CaCO3) - Calcite Rock
sedimentary
Ruby and Diamond in Gold Setting
Corundum (Al2O3) and Diamond (C)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Carnelian Agate
Silicon Dioxide (SiO2) - Carnelian variety of Chalcedony
Mineral
Bloodstone
Heliotrope (a variety of Cryptocrystalline Quartz / Jasper, SiO2)
mineral
Dragon Vein Agate
Silicon Dioxide (SiO2)
mineral
Yellow Aventurine
Quartz (SiO2) with iron-bearing inclusions
mineral
Moonstone (Variety of Orthoclase Feldspar)
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Quartz (Iron-Stained Quartz)
Silicon Dioxide (SiO2) with iron oxide inclusions
mineral
Green Aventurine (Carved)
Silicon Dioxide (Quartz variant) with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O(OH)2)
mineral
Raw Citrine
Citrine (Silicon Dioxide - SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Amethyst
Quartz (SiO2) variety
Mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral