Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Category
Industrial Byproduct (Often Confused With Igneous Rocks Or Meteorites)
Browse industrial byproduct (often confused with igneous rocks or meteorites) specimens identified by the Rock Identifier community.
Learn about Industrial Byproduct (Often Confused With Igneous Rocks Or Meteorites) in the encyclopedia
View all →
Gneiss
Gneiss
metamorphic
Gneiss
Foliated Metamorphic Gneiss
metamorphic
Citrine
Citrine (Silicon Dioxide, SiO2)
mineral
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
mineral
Agate (specifically a small Chalcedony nodule)
Agate (Cryptocrystalline variety of Quartz, SiO2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Amethyst
Amethyst (variety of Quartz, SiO2)
mineral
Greenstone
Protolith: Basaltic rock
metamorphic
Labradorite
Labradorite (Ca,Na)(Al,Si)4O8
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Greenstone / Metabasalt
Metamorphosed Mafic Rock (Greenschist facies)
metamorphic
Kunzite (variety of Spodumene)
Lithium Aluminum Silicate (LiAlSi2O6)
mineral
Greenstone
Greenschist (commonly containing Chlorite, Actinolite, and Epidote)
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss
Gneissic Metamorphic Rock
metamorphic
Quartz / Common Agate
Silicon Dioxide (SiO2)
mineral
Mica (Muscovite)
Potassium aluminum silicate - KAl2(AlSi3O10)(OH)2
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Scoria (Lava Rock)
Vesicular Basalt / Scoria
igneous
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
mineral
Rock Crystal Quartz
Quartz (SiO₂)
Mineral
Green Gneiss or Greenschist
Chlorite/Actinolite Gneiss or Schist
metamorphic
Quartz
Silicon Dioxide (SiO2)
mineral
Agate
Chalcedony (SiO2) with impurities
sedimentary
Pyrite
Iron Disulfide (FeS2)
mineral
Tumbled milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Gneiss
Gneiss
metamorphic
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss
Foliated Metamorphic Rock (Gneiss)
metamorphic
Clear Quartz (Tumbled)
Quartz (Silicon Dioxide - SiO2)
mineral
Tumbled milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Tumbled labradorite
Labradorite, calcium-rich plagioclase feldspar; approximately (Ca,Na)(Al,Si)₄O₈
mineral
Garnet
Garnet Group (often Pyrope or Almandine); X3Y2(SiO4)3
mineral
Quartz
SiO₂ (Silicon Dioxide)
Mineral
Gemstones (Emerald and Yellow Topaz or Citrine)
Beryl (Be3Al2Si6O18) and Quartz (SiO2) or Topaz (Al2SiO4(F,OH)2)
mineral
Blue Apatite
Calcium Fluorophosphate (Ca5(PO4)3F)
mineral