Dyed Quartz Geode
Silicon Dioxide (SiO2) with artificial pigment
mineral
Category
Sedimentary (Primary) With Artificial Modification
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Likely vertebra fossil or bone fragment
Indeterminate fossilized vertebra; mineralized hydroxyapatite, commonly Ca₅(PO₄)₃(OH)
fossil
Tumbled red jasper
Jasper, microcrystalline quartz (SiO₂) colored mainly by iron oxides
mineral
Dyed Quartz Crystal
Silicon Dioxide (SiO2) with artificial pigment
mineral
Tumbled Agate (Dyed Blue)
Silicon Dioxide (Chalcedony variety)
gemstone
Turquoise
Turquoise (Hydrated phosphate of copper and aluminium), CuAl6(PO4)4(OH)8·4H2O
mineral
Dyed Howlite (Turquenite)
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)
mineral
Green Quartz (likely Aventurine or Prasiolite)
Silicon Dioxide (SiO2) with inclusions
mineral
Red Tiger's Eye
SiO2 (Silicon Dioxide with iron inclusions)
mineral
Yellow Chalcedony (Tumbled/Cabochon)
Silicon dioxide (SiO2)
mineral
Likely polished black-and-white stone fragment
Indeterminate from image; possibly tourmalinated quartz, black-and-white jasper, or coated stone
mineral
Dyed Agate
Silicon Dioxide (SiO2) - variety Chalcedony
mineral
Tumbled carnelian (orange chalcedony)
Carnelian, a microcrystalline variety of quartz; silicon dioxide (SiO₂) colored mainly by iron oxides
mineral
Painted River Pebble (likely Basalt or Greywacke)
Aphanitic Lithic Clast with Anthropogenic Pigment coating
Sedimentary or Igneous
Dyed Quartz Crystals
Silicon Dioxide (SiO2) with artificial pigment
mineral
Dyed blue tumbled stone, likely howlite or magnesite
Howlite (Ca₂B₅SiO₉(OH)₅) or magnesite (MgCO₃), artificially dyed blue
mineral
Prasiolite (Green Quartz)
Silicon Dioxide (SiO2) with iron impurities
mineral
Dyed Pink Quartzite (Jadeite Simulant)
Silicon Dioxide (SiO2) with organic dye
metamorphic
Quartz (Citrine or Iron-Stained)
Silicon Dioxide (SiO2)
mineral
Pink Jade (Dyed Quartzite)
Silicon Dioxide (SiO2) - primarily Quartzite or Quartz
metamorphic
Wood Paneling
Engineered Wood / Plywood Paneling
not a rock
Pink Dyed Agate
Silicon Dioxide (SiO2) - Variety Agate
mineral
Dragon Vein Agate
Silicon dioxide / Chalcedony (with heat/dye treatment) SiO2
gemstone
Dyed Agate
Silicon Dioxide (SiO2)
mineral
Unidentified dark pebble
Undetermined; possibly polished basalt, chert, or iron-rich stone
mineral
Purple Dyed Dalmatian Stone
Dyed Peralkaline Trachyte
igneous
Quartz Geodes and Crystal Clusters
Silicon Dioxide (SiO2)
mineral
Yellow Quartz
SiO2 (Silicon Dioxide)
mineral
Red Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with Fe2O3 inclusions)
metamorphic
Blue Agate Slice
Chalcedony (SiO2)
gemstone
Sandstone (Nut-stone / Cup-stone artifact)
Quartz Arenite / Worked Sedimentary Rock
sedimentary
Dyed Blue Agate
Chalcedony (SiO2) with artificial dye
gemstone
Dyed Blue Agate Slice
Silicon Dioxide (SiO2)
mineral
Blue Agate Geode (Dyed)
Cryptocrystalline Quartz (SiO2)
mineral
Aura Quartz Bead
Silicon dioxide (SiO2) with metal coating
mineral with artificial coating
Jasper (Multi-colored) / Sea Glass Slag
Silicon Dioxide (SiO2) with impurities of Iron Oxide
Sedimentary (if natural Jasper) or Artificial (if Slag)
Cullet Glass / Slag Glass
Amorphous silica glass
man-made glass / industrial byproduct
Olivine (Peridot when gem-quality)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
mineral
Peridot (Olivine)
Magnesium Iron Silicate (Mg, Fe)2SiO4
mineral
Pink Dyed Agate
Chalcedony (SiO2) with artificial dyes
mineral
Blue Dyed Agate
Chalcedony (SiO2) with artificial pigment
mineral