Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
Category
Browse sedimentary (artificial) specimens identified by the Rock Identifier community.
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
Blue Dyed Agate Geode (Slice)
Silicon Dioxide (SiO2) - Chalcedony / Quartz
Dyed Agate Geode Slice
Silicon Dioxide (SiO2)
Blue Quartzite (Dyed)
Metamorphosed Quartz-rich Sandstone (SiO2 with organic dye)
Glass
Amorphous Silicon Dioxide (SiO2)
Cullet Glass (Slag Glass)
Amorphous Silicon Dioxide (SiO2) with metallic oxide impurities
Synthetic Resin (Artificial Specimen)
Polyurethane or Polyester Resin
Clear quartz crystal point
Quartz (silicon dioxide, SiO₂), likely a polished or cut crystal
Banded Agate
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Blue Tiger's Eye (Hawk's Eye)
Pseudomorph of Quartz after Crocidolite (SiO2)
Yellow Quartz (possibly dyed)
Silicon Dioxide (SiO2)
Slag (Industrial Byproduct)
Anthropogenic Vitreous Silicate material
Scoria (vesicular basalt)
Scoria; vesicular mafic volcanic rock, commonly basaltic in composition
Asphalt aggregate (crushed stone in bitumen)
Artificial composite; predominantly crushed granite, basalt, limestone, and/or recycled aggregate bound by bitumen
Smoky Quartz
Silicon Dioxide (SiO2)
Tumbled quartz crystal (likely smoky or iron-stained quartz)
Quartz, silicon dioxide (SiO₂)
Tumbled chalcopyrite (likely)
Chalcopyrite, CuFeS₂
Metallic sulfide mineral fragment, likely bornite or chalcopyrite
Bornite (Cu₅FeS₄) or chalcopyrite (CuFeS₂)
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
Dyed Dalmatian Jasper (Dalmatian Stone)
Perthitic Feldspar with Arfvedsonite inclusions
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
Polished blue stone, likely sodalite or dyed agate
Sodalite: Na₈(Al₆Si₆O₂₄)Cl₂; exact identification requires testing
Heated Citrine (Heat-Treated Amethyst)
Silicon Dioxide (SiO2), quartz variety
Heat-Treated Citrine (Amethyst)
Silicon Dioxide (SiO2) with iron impurities
Heat-Treated Amethyst (Commercial Citrine)
Silicon Dioxide (SiO2) with iron impurities
Pink Quartz (likely dyed)
Silicon Dioxide (SiO2)
Black Agate
Chalcedony (SiO2)
Agate (Polished Slice)
Banded Chalcedony (SiO2)
Citrine (Iron-stained Quartz)
Silicon Dioxide (SiO2)
Blue Dyed Agate
Chalcedony (cryptocrystalline variety of Quartz), SiO2
Dyed Blue Agate (Slab)
Agate (Variety of Chalcedony/Microcrystalline Quartz), SiO2
Chalcopyrite (Peacock Ore)
Copper Iron Sulfide (CuFeS2)
Dyed Blue Agate (Dragon Vein Agate)
Silicon Dioxide (SiO2) with artificial cobalt/organic dyes
Heat-Treated Citrine
Silicon Dioxide (SiO2) with iron impurities
Heat-Treated Citrine (Amethyst)
Silicon Dioxide (SiO2) with iron impurities
Dyed Howlite (simulating Lavender/Purple Jade or Charoite)
Howlite: Ca2B5SiO9(OH)5 (when natural)
Polished dark stone, likely basalt
Basalt, a fine-grained mafic volcanic rock composed mainly of plagioclase feldspar and pyroxene, with possible olivine and magnetite
Smoky quartz
Quartz, silicon dioxide (SiO₂), smoky variety
Smoky Quartz
SiO2 (Silicon Dioxide with aluminum impurities)
Smoky quartz
Quartz (SiO₂), brown-to-gray smoky variety
Peacock Ore (Bornite or Chalcopyrite)
Bornite (Cu₅FeS₄) or iridescent Chalcopyrite (CuFeS₂)
Heat-Treated Citrine
Quartz (Silicon Dioxide, SiO2)