Slag
Ferrous Slag (Amorphous calcium-magnesium-aluminum silicates)
Category
Browse sedimentary (primary) with artificial modification specimens identified by the Rock Identifier community.
Slag
Ferrous Slag (Amorphous calcium-magnesium-aluminum silicates)
Man-made Green Quartz (Lab-grown or Treated)
Silicon Dioxide (SiO2) with artificial coloration
Blue Agate (Dyed)
Silicon Dioxide (SiO2) with artificial pigment
Dyed Quartz (imitating Emerald/Green Quartz)
Silicon Dioxide (SiO2) with artificial pigment
Dyed Agate
Silicon Dioxide (SiO2) with artificial pigment
Slag (Industrial Glass/Metal Waste)
Artificial silicate/ferro-silicate byproduct
Dyed Quartz (often sold as 'Blue Quartz' or 'Blue Agate')
Silicon Dioxide (SiO2) with artificial pigment
Pink Tumbled Agate (Dyed)
Silicon Dioxide (SiO2) with artificial dyes
Red Tiger's Eye
SiO2 (Silicon Dioxide) - Pseudomorph of Quartz after Crocidolite
White Quartz Sphere
Silicon Dioxide (SiO2)
Purple Dyed Agate Geode (Banded Chalcedony)
Silicon Dioxide (SiO2) - variety: Agate
Red Tiger's Eye
Pseudomorph of Macrocrystalline Quartz after Crocidolite (SiO2)
Dyed Crackle Quartz (Green)
Quenching-treated Quartz (Silicon Dioxide, SiO2)
Dyed Alum or Dyed Quartz (Ornamental Crystal)
Silicon Dioxide (SiO2) or Potassium Alum [KAl(SO4)2·12H2O]
Agate (Dyed High-Grade Polished Slice)
Silicon dioxide (SiO2), Chalcedony crystal variety
Red Chalcedony (likely dyed)
Chalcedony (a variety of Quartz), SiO2
Dyed Dragon Vein Agate
Silicon Dioxide (SiO2) with artificial dye
Dyed Blue Quartzite
SiO2 (Silicon Dioxide) with artificial colorants
Blue Crackle Quartz (Dyed Quarzite)
Silicon Dioxide (SiO2) with artificial dye
Blue Dyed Agate
Silicon Dioxide (SiO2) with artificial pigment
Dyed Agate
Silicon Dioxide (SiO2) with artificial pigment
Blue Agate (Dyed Chalcedony)
Silicon Dioxide (SiO2)
Cobalt Blue Slag Glass
Amorphous Silicon Dioxide (anthropogenic) with Cobalt additives
Cream Marble (Speckled)
Metamorphosed Limestone (mainly CaCO3)
Pink Dyed Agate (Banded Chalcedony)
Silicon dioxide (SiO2) - variety Chalcedony
Dyed Crackle Quartz
Silicon Dioxide (SiO2) with synthetic dye
Dyed Agate
Chalcedony (Silicon Dioxide, SiO2)
Dyed Aura Quartz
Silicon Dioxide (SiO2) with metallic coating
Heat-Treated Citrine (Amethyst-based)
Quartz (Silicon Dioxide) - SiO2
Citrine
Silicon dioxide (SiO2)
Rose Quartz and Milky Quartz
Silicon Dioxide (SiO2)
Smoky Quartz
Smoky Quartz (SiO2)
Pink Banded Agate (Dyed)
Chalcedony (cryptocrystalline silica), chemical formula SiO2
Dyed Agate Geode (Pink/Magenta)
Silicon Dioxide (SiO2) - variety of Chalcedony/Quartz
Red Tiger's Eye
Silicified Crocidolite (Quartz pseudo-morph after Crocidolite), SiO2
Dyed Agate Slice
Silicon Dioxide (SiO2) - variety of Chalcedony
Concrete Paver (Artificial Cementitious Rock)
Hydrated Portland Cement Aggregate
Green Banded Agate
Agate (Variety of Chalcedony/Quartz), SiO2
Agate
Banded Chalcedony (SiO2)
Dyed Agate
Silicon Dioxide (SiO2) - Variety Agate / Chalcedony
Basalt (Polished River Stone)
Basalt (Extrusive Mafic Volcanic Rock)
Dyed Howlite
Borosilicate hydroxide (Ca2B5SiO9(OH)5)