Polished brown jasper (likely brecciated or orbicular jasper)
Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide and other mineral inclusions
Category
Browse mineral (man modified) specimens identified by the Rock Identifier community.
Polished brown jasper (likely brecciated or orbicular jasper)
Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide and other mineral inclusions
Black glassy fragment, likely obsidian or industrial glass
Volcanic glass (obsidian), chiefly amorphous SiO₂; identification uncertain from image
Sandstone (Water-worn Cobble)
Arenite (SiO2 with CaCO3 or Fe2O3 cement)
Tumbled milky chalcedony (likely common opalite-like quartz)
Chalcedony, microcrystalline SiO₂; possibly pale common opal, hydrated SiO₂·nH₂O
Colorless quartz crystal (likely quartz fragment)
Quartz, silicon dioxide (SiO₂)
Turquoise
Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O
Polished silver sheen obsidian heart
Obsidian (volcanic glass), primarily rhyolitic silica-rich glass
Blue opalite glass (likely man-made)
Opalite glass; a silica-based amorphous glass, not natural opal
Carborundum (Silicon Carbide)
Silicon Carbide (SiC) / Moissanite (natural form)
Clear quartz fragment (rock crystal)
Quartz, silicon dioxide (SiO₂)
Hematite
Iron(III) oxide (Fe2O3)
Opalite
Synthetic glass (SiO2 + metal additions)
Tumbled opalite (likely man-made glass)
Opalite glass; a synthetic opalescent glass, not a natural mineral species
Slag Glass (Leland Blue variant)
Anthropogenic Vitreous Silicate
Iron Slag
Iron/Steel Slag (Ferrosilicate Glass)
Opalite
Synthetic Opalised Glass
Green sea glass (likely)
Man-made glass, likely soda-lime silicate glass; not a natural mineral or rock
Man-made Synthetic Material (Not a rock or mineral)
Polyester (Polyethylene terephthalate) / Faux Fur
Opalite
Synthetic Glass, SiO2 base with metallic inclusions
Blue glassy tumbled stone, likely blue chalcedony or slag glass
Chalcedony (microcrystalline SiO₂), possibly man-made blue glass
Sea Glass
Amorphous Silicon Dioxide (Man-made glass weathered by nature)
Sea Glass
Amorphous silicon dioxide (Man-made glass weathered by nature)
Opalite
Man-made opalescent glass (SiO2 + metal oxides)
Blue-dyed tumbled quartz or glass imitation
Quartz (SiO₂), appearance possibly enhanced with blue dye; identity uncertain from image
Raw quartz crystal
Quartz (silicon dioxide, SiO₂), likely milky or included quartz
Note: This is a Man-Made Object (Costume/Prop Patch)
Synthetic fiber and pigments (Cellulose/Plastic-based composite)
Metallic sulfide mineral fragment, likely galena
Galena (lead sulfide, PbS), tentative identification
Tumbled black obsidian (likely)
Volcanic glass; chiefly silica-rich rhyolitic glass (SiO₂)
Man-made Synthetic Material (Plastic/Composite)
Acrylonitrile Butadiene Styrene (ABS) or High-Impact Polystyrene (HIPS)
Goldstone (Red)
Aventurine Glass (SiO2 + Cu)
Likely clear quartz crystal or glass-like gemstone
Quartz, silicon dioxide (SiO₂); exact identification is uncertain from the strongly magenta-lit image
Red-orange jasper pebble (tentative)
Microcrystalline quartz, SiO₂, colored mainly by iron oxides
Dyed Crackle Quartz
Silicon Dioxide (SiO2) with synthetic dye
Dyed Dragon Vein Agate
Silicon Dioxide (SiO2) with artificial pigment
Carborundum (Silicon Carbide)
Silicon Carbide (SiC)
Man-made earbud charging case (Not a rock or mineral)
Acrylonitrile Butadiene Styrene (ABS) Plastic with electronic components
Lapis Lazuli
Lapis Lazuli (a rock, not a single mineral; primary mineral is Lazurite (Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2
Blue Impression Jasper beads
Impression jasper (microcrystalline quartz/chalcedony), chiefly SiO₂, with iron-oxide and other mineral inclusions
Blue glassy mineral specimen, possibly dyed or synthetic
Uncertain; possible blue fluorite (CaF₂), dyed chalcedony, or man-made glass
Pink Cubic Zirconia (CZ)
Zirconium Dioxide (ZrO2)
Diamond
C (Carbon)
Opalite (Man-made Glass)
Synthetic Silicon Dioxide Glass (SiO2 + metal oxides)