Dyed Agate
Silicon Dioxide (SiO2)
Category
Browse sedimentary (if natural jasper) or artificial (if slag) specimens identified by the Rock Identifier community.
Dyed Agate
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Rose Quartz and Milky Quartz
Silicon Dioxide (SiO2)
Pink Dyed Agate (Banded Chalcedony)
Silicon dioxide (SiO2) - variety Chalcedony
Slag Glass (Cullet)
Amorphous Silica (man-made), primarily SiO2 with trace metal oxides
Dyed Imperial Jasper (Sea Sediment Jasper)
Silicon Dioxide (SiO2) - Impure Quartz/Chalcedony
Pink Dyed Agate
Chalcedony (SiO2) with artificial dyes
Agate
Banded Chalcedony (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Red Tiger's Eye
Silicified Crocidolite (Quartz pseudo-morph after Crocidolite), SiO2
Limonite and Goethite (Ironstone)
Hydrous Iron Oxide Mixture (FeO(OH)·nH2O)
Pink Dyed Agate (Pink Agate Slice)
Silicon Dioxide (SiO2) - Chalcedony / Cryptocrystalline Quartz
Dyed Pink Quartzite (Jadeite Simulant)
Silicon Dioxide (SiO2) with organic dye
Heat-Treated Citrine (Amethyst-based)
Quartz (Silicon Dioxide) - SiO2
Smoky Quartz
Silicon Dioxide (SiO2)
Citrine
Silicon dioxide (SiO2)
Slag Glass
Anthropogenic Amorphous Silicon Dioxide
Dyed Howlite (simulating Lavender/Purple Jade or Charoite)
Howlite: Ca2B5SiO9(OH)5 (when natural)
Dyed Agate Slice
Silicon Dioxide (SiO2) - variety of Chalcedony
Dyed Agate
Silicon Dioxide (SiO2) with synthetic dyes
Dyed Agate
Silicon Dioxide (SiO2)
Silicon Carbide (Carborundum)
Moissanite (SiC), though mostly synthetic
Blue Dyed Agate
Chalcedony (SiO2) with artificial pigment
Pink Banded Agate (Dyed)
Chalcedony (cryptocrystalline silica), chemical formula SiO2
Turquoise (Blue Howlite / Magnesite imitation)
CuAl6(PO4)4(OH)8·4H2O (for natural Turquoise); Ca2B5SiO9(OH)5 (for Howlite)
Blue Slag Glass
Amorphous Silica (Industrial byproduct)
Peridot (likely, given the color and bead form)
Olivine, variety Peridot (Mg,Fe)2SiO4
Smoky Quartz
Silicon Dioxide (SiO2)
Man-made Slag (Industrial Byproduct)
Anthropogenic Glassy Residue
Metallic Ornament / Jewelry
N/A - This is an artificial object, not a geological specimen.
Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
Yellow Quartz (Citrine type/Tumbled Quartz)
Silicon Dioxide (SiO2)
Heat-Treated Citrine (Amethyst)
Silicon Dioxide (SiO2) with iron impurities
Chert (specifically Blue Chert/Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Blue Dyed Agate
Silicon Dioxide (SiO2) with artificial pigment
Green Slag Glass
Amorphous Silica / Glassy Blast Furnace Slag
Blue Quartzite (Dyed)
Silicon Dioxide (SiO2) with inclusions
Man-made Green Quartz (Lab-grown or Treated)
Silicon Dioxide (SiO2) with artificial coloration
Dyed Crackle Quartz (Green)
Quenching-treated Quartz (Silicon Dioxide, SiO2)
Concrete
Anthropogenic Sedimentary Conglomerate (Cement mixture: typically Ca2SiO4, Ca3SiO5, Ca3Al2O6)
Dyed Purple Agate
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Blue Crackle Quartz (Dyed Quarzite)
Silicon Dioxide (SiO2) with artificial dye