Aura Quartz Geode (Angel Aura Quartz)
Silicon Dioxide (SiO2) bonded with precious metals
mineral
Category
Sedimentary (Artificial)
Browse sedimentary (artificial) specimens identified by the Rock Identifier community.
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Dyed Agate
Chalcedony (SiO2 with impurities)
mineral
Dyed Agate
SiO2
mineral
Dyed Agate (Tumbled)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
mineral
Dyed Agate / Quartz
Silicon Dioxide (SiO2) with artificial dye
mineral
Banded Agate (Dyed Purple)
Agate (Variety of Chalcedony/Quartz), SiO2
mineral
Dyed Blue Agate
Silicon Dioxide (SiO2) - Microcrystalline Quartz
mineral
Iron Slag
Anthropogenic Vitreous Silicate (Byproduct of Smelting)
Mineral-like byproduct
Blue Banded Agate
Chalcedony (Silicon Dioxide, SiO2)
mineral
Dyed Agate
Silicon Dioxide (SiO2) with synthetic dyes
mineral
Dyed Pink Quartzite
Tumbled and Dyed Quartzite (SiO2 with dye treatment)
metamorphic
Dyed Quartz Pendant
Silicon Dioxide (SiO2) with artificial dye
mineral
Blue Banded Agate (Dyed)
Silicon Dioxide (SiO2) - Chalcedony variety
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Milky Quartz pebble)
Silicon Dioxide (SiO2)
mineral
Cobalt Blue Slag Glass
Amorphous Silicon Dioxide (anthropogenic) with Cobalt additives
mineraloid
Blue-dyed howlite beads (likely)
Howlite, Ca₂B₅SiO₉(OH)₅, commonly dyed blue to imitate turquoise
mineral
Dyed Purple Agate
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Aura Quartz (Coated Quartz)
Silicon Dioxide (SiO2) treated with metallic vapor
mineral
Dalmatian Stone
Peralkaline Feldsphathic Igneous Rock
igneous
Dyed Agate
SiO2 (Silicon Dioxide)
Mineral
Dragon Vein Agate (Dyed/Fractured Quartz)
Silicon dioxide (SiO2)
gemstone
Agate (Dyed High-Grade Polished Slice)
Silicon dioxide (SiO2), Chalcedony crystal variety
mineral
Pink Banded Agate (Dyed)
Chalcedony (cryptocrystalline silica), chemical formula SiO2
mineral
Green cabochon gemstone, likely aventurine or dyed chalcedony
Indeterminate from image; possible quartz variety (SiO₂), including aventurine quartz or chalcedony
gemstone
Drill Core Sample
Cylindrical Rock Core (Specific mineralogy varies by extraction site)
Metamorphic (Likely Gneiss or Schist based on texture)
Dyed Agate Slice
Chalcedony (Silicon Dioxide, SiO2) with artificial pigment
mineral
Dyed Crackle Quartz (Green)
Quenching-treated Quartz (Silicon Dioxide, SiO2)
mineral
Dragon Vein Agate (Dyed/Treated)
Agate (SiO2)
mineral
Purple Dyed Agate Geode (Banded Chalcedony)
Silicon Dioxide (SiO2) - variety: Agate
mineral
Dyed Agate
SiO2 (Silicon Dioxide)
Mineral
Lemon Quartz (Orizaba/Citrinated Quartz)
Silicon Dioxide (SiO2) with iron impurities/treatment
mineral
Smoky quartz (likely)
Quartz, silicon dioxide (SiO₂), naturally irradiated variety
mineral
Red Chalcedony (likely dyed)
Chalcedony (a variety of Quartz), SiO2
Mineral (Cryptocrystalline Quartz)
Blue Obsidian (Cullet Glass)
Silicon Dioxide (Amorphous Glass)
mineral
Peridot (Olivine)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Painted River Rock (likely Quartzite or Granite)
Quartzite or Granitic Gneiss (painted)
metamorphic
Dyed Agate / Quartz (Tumbled)
Silicon Dioxide (SiO2) with artificial dye
mineral
White Quartz Sphere
Silicon Dioxide (SiO2)
mineral
Vesicular volcanic scoria (likely weathered basaltic scoria)
Scoria; chiefly vesicular basalt, composed mainly of plagioclase, pyroxene, and iron-rich glass
igneous