Dyed Crackle Quartz
Silicon Dioxide (SiO2) with synthetic dye
Category
Browse man made metamorphic style composite specimens identified by the Rock Identifier community.
Dyed Crackle Quartz
Silicon Dioxide (SiO2) with synthetic dye
Polished blue calcite sphere (tentative identification)
Calcite, CaCO₃; blue color generally results from trace impurities or inclusions
Libyan Desert Glass
Impact-melt silica glass (SiO2 + traces of Al, Fe, Ti)
Opalite (a synthetic glass, often confused with Opal)
Silicon dioxide glass (SiO2nH2O, for natural opal)
Sea Glass
Amorphous Silicon Dioxide (Man-made glass weathered by nature)
Chert (Arrowhead/Artifact Fragment)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Unakite
Altered granite (Epidote, Orthoclase Feldspar, and Quartz)
Carved Mottled Greenish-Yellow Crystal/Glass Object
Unknown; possibly a form of quartz (chalcedony/jadeite/nephrite) or glass/resin.
Blue Impression Jasper beads
Impression jasper (microcrystalline quartz/chalcedony), chiefly SiO₂, with iron-oxide and other mineral inclusions
Sea Glass
Amorphous silicon dioxide (Man-made glass weathered by nature)
Dyed Quartz Geode
Silicon Dioxide (SiO2) with artificial pigment
Pink/red faceted gemstone, likely synthetic ruby or pink sapphire
Corundum, aluminum oxide (Al₂O₃); likely lab-grown or treated material
Quartzite
Quartzite (primarily SiO2)
Carved Stone Turtle
Carved Soapstone and Quartz
Marble (Sculpted Statue)
Metamorphic Limestone (composed primarily of Calcite, CaCO3)
Hematite Beads
Hematite (Fe2O3)
Fired Clay Brick (Anthropic Rock substitute)
Anthropogenic polycrystalline ceramic (predominantly Mullite and Quartz: Al6Si2O13 + SiO2)
Yellow Sapphire (Raw)
Corundum (Al2O3)
Orange Aventurine (Sunstone-style Quartzite)
Silicon Dioxide (SiO2) with Goethite or Hematite inclusions
Rough Corundum (Sapphire/Ruby mixture)
Corundum (Aluminum Oxide, Al2O3)
Green Sea Glass
Amorphous Silica (man-made glass), SiO2 + additive metal oxides
Pyrite
Iron Sulfide (FeS2)
Goldstone (aventurine glass)
Man-made copper-bearing glass; not a natural mineral (commonly sold as blue/brown goldstone)
Colorless faceted gemstone, likely cubic zirconia
Synthetic cubic zirconia (zirconium dioxide, ZrO₂); identity is visual and not definitive
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
Corundum (Pink Sapphire / Ruby)
Al2O3 (Aluminum Oxide)
Man-made Glass (Tumbled/Shaped)
Amorphous Silicon Dioxide (SiO2) with metal oxide colorants
Man-made Slag (Industrial Byproduct)
Anthropogenic Glassy Residue
Man-made Crystal (Lead Glass)
Lead oxide-doped Silica Glass (approx. SiO2 + PbO)
Man-made Dyed Aura Quartz
Silicon Dioxide (SiO2) with metallic coating/dye
Opalite
Man-made synthetic glass with opalescent effects (SiO2 + metal oxides)
Slag Glass (Cullet)
Amorphous Silica (man-made), primarily SiO2 with trace metal oxides
Tiger Iron
Tiger Iron (composite of Tiger's Eye, Red Jasper, and Hematite)
Asphalt
Asphalt concrete (engineered material, not a naturally occurring rock/mineral in this form)
Goldstone (Red/Brown)
Aventurine Glass (SiO2 with Copper inclusions)
Marble (Carrara Marble style)
Recrystallized Calcite (CaCO3)
Green Aventurine
Quartz (SiO2) with Fuchsite inclusions
Green Agate
Silicon dioxide (SiO₂)
Man-made Ceramic / Clay Figurine
Aluminosilicate Ceramic (Processed Clay)
Rainbow Hematite (Man-made/Treated)
Tumbled Hematite with Titanium/Anodized coating (Iron(III) oxide, Fe2O3)
Glass / Silicon Dioxide (Man-made)
SiO2 (Amorphous Silicon Dioxide)
Man-made Blank Ammunition (Brass)
CuZn (Cartridge Brass - roughly 70% Copper, 30% Zinc)