Engineered Quartz Stone
Agglomerated Quartz (SiO2 + Polymer Resin)
mineral-based composite
Category
Not A Rock (Man Made Industrial Metal)
Browse not a rock (man made industrial metal) specimens identified by the Rock Identifier community.
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Diamond (in jewelry)
Carbon (C)
mineral
Sea Glass
Amorphous silicon dioxide (SiO2) - Man-made glass tumbled by nature
mineral
Coal (Anthracite / Bituminous)
Organic Sedimentary Rock (Carbon-based)
sedimentary
Raw quartz crystal
Quartz (silicon dioxide, SiO₂), likely milky or included quartz
mineral
Brick
Fired clay or Ceramic material (no specific mineralogical scientific name as it's a composite)
Man-made material (constructed)
Tumbled greenstone (likely serpentinite or green jasper)
Serpentinite, commonly dominated by serpentine-group minerals (Mg₃Si₂O₅(OH)₄); exact identification requires testing
metamorphic
Granite (weathered pebble)
Granite (plutonic igneous rock)
Igneous
Blue Goldstone
Aventurine Glass (Silicon Dioxide with metal inclusions)
man-made glass mineral simulant
Slag
Ferrous slag (by-product of iron smelting)
Mineraloid / Anthropogenic
Copper Ore (Malachite and Azurite stained rock)
Copper-bearing rock with secondary copper carbonates
mineral
Aventurine
Quartz containing inclusions of Fuchsite (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Likely iron-rich rock or weathered metallic mineral fragment
Uncertain; possibly limonite/goethite or iron-bearing slag
mineral
Diamond (in jewelry setting)
Diamond (C - Carbon)
mineral
Epithermal Gold Ore (in Quartz/Rhyolite matrix)
Auriferous Quartz (Au + SiO2)
mineral
Slag Glass (Cullet Glass)
Amorphous Silica (Industrial byproduct)
mineral
Slag Glass (Leland Blue variant)
Anthropogenic Vitreous Silicate
mineral
Silver (Sterling Silver)
Argentum (Ag) mixed with Copper (Cu); Formula: Ag+Cu
mineral
Granite
Intrusive Igneous Rock
igneous
Basalt
Basalt (containing plagioclase, pyroxene, and olivine)
igneous
Granite
Intrusive igneous rock
igneous
Pegmatite (Granitic Pegmatite with Quartz and Feldspar)
Intrusive Igneous Rock (Granitic Pegmatite)
igneous
Quartz Sand
Silicon Dioxide (SiO2)
sedimentary
Granite
Granite (Intrusive Igneous Rock)
igneous
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
mineral
Granite
Plutonic Igneous Rock
igneous
Quartzite
Quartzite (SiO2)
metamorphic
Bauxite
Al2O3·2H2O (Aluminum Hydroxide)
sedimentary
Bauxite
Bauxite (mixture of Hydrous Aluminum Oxides)
sedimentary
Hoodoo (Limestone / Siltstone Formation)
Claron Formation (Sedimentary Rock - Limestone, Mudstone, Dolomite)
sedimentary
Blue goldstone beads
Man-made aventurine glass (silica glass with metallic copper inclusions), not natural lapis lazuli
mineral
Granite
Phaneritic plutonic rock (Quartz, Feldspar, Mica)
igneous
Diamond
Diamond (C)
mineral
Diamond and Gold Jewelry
Carbon (Diamond) / Au (Gold)
gemstone
Quartzite River Cobble
Quartzite (primarily SiO2)
metamorphic
Moissanite
Silicon Carbide (SiC)
mineral
Diamond
Native Carbon (C)
gemstone
Dark rounded pebble, likely basalt or slag
Probable fine-grained mafic rock; possibly basalt (plagioclase–pyroxene) or industrial iron/steel slag
igneous
Granite
Phaneritic Felsic Intrusive Igneous Rock
igneous
Granite
Phaneritic Felsic Igneous Rock
igneous
Synthetic Faux Fur Fursuit
Polyacrylonitrile / Polyester (Synthetic Textile)
not a rock (synthetic material/costume)