Rock Identifier

Category

Not A Natural Rock

Browse not a natural rock specimens identified by the Rock Identifier community.

Learn about Not A Natural Rock in the encyclopedia

Asphalt Rock

Rock Gypsum

Coral Rock

Rock Salt

Calc-Silicate Rock

Calc-Silicate Rock

Talc-carbonate Rock

Talc-carbonate Rock

Chalk

Obsidian

Baddeleyite

Cataclasite

Anorthosite

Kimberlite

Diamond (Faceted) (Carbon (C)) — gemstone

Diamond (Faceted)

Carbon (C)

Diamond (Cut Gemstone) (Carbon (C)) — gemstone

Diamond (Cut Gemstone)

Carbon (C)

Diamond (in a jewelry setting) (Diamond (Carbon, C)) — mineral

Diamond (in a jewelry setting)

Diamond (Carbon, C)

Silver (Jewelry Specimen) (Native Silver (Ag)) — Mineral (Native Element)

Silver (Jewelry Specimen)

Native Silver (Ag)

Mineral (Native Element)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz with Rutile Inclusions (Silicon Dioxide (SiO2) with TiO2 needles) — mineral

Smoky Quartz with Rutile Inclusions

Silicon Dioxide (SiO2) with TiO2 needles

Amethyst (Rough) (Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst (Rough)

Silicon Dioxide (SiO2) with iron impurities

Amethyst (Quartz (Silicon Dioxide with iron impurities), SiO2) — mineral

Amethyst

Quartz (Silicon Dioxide with iron impurities), SiO2

Selenite (gypsum crystal) (Gypsum, calcium sulfate dihydrate (CaSO₄·2H₂O), likely the variety selenite) — mineral

Selenite (gypsum crystal)

Gypsum, calcium sulfate dihydrate (CaSO₄·2H₂O), likely the variety selenite

Turquoise (CuAl6(PO4)4(OH)8·4H2O (Hydrated copper aluminum phosphate)) — mineral

Turquoise

CuAl6(PO4)4(OH)8·4H2O (Hydrated copper aluminum phosphate)

Opal (Hydrated amorphous silica (SiO2·nH2O)) — mineral

Opal

Hydrated amorphous silica (SiO2·nH2O)

Dyed Pink Agate Slice (Silicon Dioxide (SiO2) - Chalcedony variety Agate) — mineral

Dyed Pink Agate Slice

Silicon Dioxide (SiO2) - Chalcedony variety Agate

Coquina (Hag Stone variant) (Biocalcarenite (Coquina)) — sedimentary

Coquina (Hag Stone variant)

Biocalcarenite (Coquina)

Digital Multimeter (Synthetic Object) (Digital Multimeter (DMM)) — not a rock

Digital Multimeter (Synthetic Object)

Digital Multimeter (DMM)

Diamond (Rough) (Carbon (C)) — gemstone

Diamond (Rough)

Carbon (C)

Diamond (in Jewelry) (Diamond (Carbon, C)) — mineral

Diamond (in Jewelry)

Diamond (Carbon, C)

Diamond (in Jewelry Setting) (Carbon (C)) — gemstone

Diamond (in Jewelry Setting)

Carbon (C)

Aura Quartz (Titanium Quartz) (Titanium-coated Silicon Dioxide (SiO2 + Ti)) — mineral

Aura Quartz (Titanium Quartz)

Titanium-coated Silicon Dioxide (SiO2 + Ti)

Diamond (C (Carbon)) — mineral

Diamond

C (Carbon)

Glauconitic Sandstone (or Greensand) (Glauconitic Siliciclastic Rock (Containing (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2)) — sedimentary

Glauconitic Sandstone (or Greensand)

Glauconitic Siliciclastic Rock (Containing (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2)

Dalmation Stone (Peralkaline Rock (mixed silicate minerals)) — igneous

Dalmation Stone

Peralkaline Rock (mixed silicate minerals)

Yellow Quartz (Citrine or Yellow Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine or Yellow Chalcedony)

Silicon Dioxide (SiO2)

Polished ocean jasper (orbicular jasper), likely (Silica-rich microcrystalline quartz/chalcedony aggregate, commonly with feldspar, epidote, and iron oxides; composition varies) — igneous

Polished ocean jasper (orbicular jasper), likely

Silica-rich microcrystalline quartz/chalcedony aggregate, commonly with feldspar, epidote, and iron oxides; composition varies

Halite (Halite (NaCl)) — Mineral

Halite

Halite (NaCl)

Blue Goldstone (Aventurine Glass (Silicon Dioxide with metal inclusions)) — man-made glass mineral simulant

Blue Goldstone

Aventurine Glass (Silicon Dioxide with metal inclusions)

man-made glass mineral simulant

Sandstone (Sandstone (composed primarily of sand-sized minerals or rock grains)) — sedimentary

Sandstone

Sandstone (composed primarily of sand-sized minerals or rock grains)

Faceted blue gemstone, likely blue topaz or synthetic spinel (Topaz (Al₂SiO₄(F,OH)₂) or synthetic spinel (MgAl₂O₄); image insufficient for certainty) — gemstone

Faceted blue gemstone, likely blue topaz or synthetic spinel

Topaz (Al₂SiO₄(F,OH)₂) or synthetic spinel (MgAl₂O₄); image insufficient for certainty

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Amethyst and Rose Quartz Beads (Crystalline Quartz (SiO2) with trace elements) — gemstone

Amethyst and Rose Quartz Beads

Crystalline Quartz (SiO2) with trace elements

Obsidian (Blue) (Volcanic Glass (SiO2)) — igneous

Obsidian (Blue)

Volcanic Glass (SiO2)

Lapidary Wax (imitation/wax model) (Hydrocarbon wax blend with colorant (imitating Lapis Lazuli/Emerald)) — mineral

Lapidary Wax (imitation/wax model)

Hydrocarbon wax blend with colorant (imitating Lapis Lazuli/Emerald)

Citrine Quartz (likely heat-treated) (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz (likely heat-treated)

Silicon Dioxide (SiO2)

Cubic Zirconia (Zirconium dioxide (ZrO2)) — mineral

Cubic Zirconia

Zirconium dioxide (ZrO2)

Cullet (Slag Glass) (Amorphous Silica (Industrial byproduct)) — mineraloid

Cullet (Slag Glass)

Amorphous Silica (Industrial byproduct)

Polished white chalcedony or milky quartz pebble (Chalcedony, microcrystalline quartz (SiO₂), possibly with iron-oxide staining or a minor mineral inclusion) — mineral

Polished white chalcedony or milky quartz pebble

Chalcedony, microcrystalline quartz (SiO₂), possibly with iron-oxide staining or a minor mineral inclusion

Blue Sapphire (Corundum (Al2O3 with Cr, Fe, and Ti trace elements)) — gemstone

Blue Sapphire

Corundum (Al2O3 with Cr, Fe, and Ti trace elements)

Dalmatian jasper (likely orbicular microgranite) (Quartz–feldspar–biotite/pyroxene microgranite; commonly marketed as Dalmatian jasper) — igneous

Dalmatian jasper (likely orbicular microgranite)

Quartz–feldspar–biotite/pyroxene microgranite; commonly marketed as Dalmatian jasper

Marble (Sculptural Statue) (Metamorphic Limestone (CaCO3)) — metamorphic

Marble (Sculptural Statue)

Metamorphic Limestone (CaCO3)

Amethyst Beads (Quartz (Silicon Dioxide, SiO2 with iron impurities)) — gemstone

Amethyst Beads

Quartz (Silicon Dioxide, SiO2 with iron impurities)

Citrine (Silicon Dioxide (Quartz variety), SiO2) — mineral

Citrine

Silicon Dioxide (Quartz variety), SiO2

Diamond (C) — gemstone

Diamond

C

Snakeskin Agate (Microcrystalline Quartz (SiO2) with chalcedony inclusions) — sedimentary

Snakeskin Agate

Microcrystalline Quartz (SiO2) with chalcedony inclusions