Rock Identifier

Category

Synthetic (Not A Natural Rock)

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

Learn about Synthetic (Not A Natural Rock) in the encyclopedia

Asphalt Rock

Yttrium Aluminum Garnet

Yttrium Aluminum Garnet

Chalk

Zircon

Obsidian

Kimberlite

Emerald in Matrix

Emerald in Matrix

Tripolite

Guano

Halite

Aquamarine Matrix

Aquamarine Matrix

Rock Salt

Citrine Quartz Geode (Silicon Dioxide (SiO2) with iron impurities) — mineral

Citrine Quartz Geode

Silicon Dioxide (SiO2) with iron impurities

Quartz (Double-Terminated) (Silicon Dioxide (SiO2)) — mineral

Quartz (Double-Terminated)

Silicon Dioxide (SiO2)

Blue Chalcedony Cube (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony Cube

Silicon Dioxide (SiO2)

Corundum (Sapphire in Matrix) (Aluminum Oxide (Al2O3)) — mineral

Corundum (Sapphire in Matrix)

Aluminum Oxide (Al2O3)

Green Aventurine (Silicon Dioxide (Quartz with Fuchsite inclusions) - SiO2) — mineral

Green Aventurine

Silicon Dioxide (Quartz with Fuchsite inclusions) - SiO2

Mahogany Obsidian (Volcanic Glass with Hematite or Magnetite (SiO2 + Fe2O3)) — igneous

Mahogany Obsidian

Volcanic Glass with Hematite or Magnetite (SiO2 + Fe2O3)

White Quartz Beads (Silicon Dioxide (SiO2)) — mineral

White Quartz Beads

Silicon Dioxide (SiO2)

Flint / Chert (Hag Stone) (Silicon Dioxide (SiO2)) — sedimentary

Flint / Chert (Hag Stone)

Silicon Dioxide (SiO2)

Cubic Zirconia (Simulated Diamond) (Zirconium Dioxide (ZrO2)) — mineral (synthetic)

Cubic Zirconia (Simulated Diamond)

Zirconium Dioxide (ZrO2)

mineral (synthetic)

Blue chalcedony (likely dyed or polished) (Chalcedony, microcrystalline quartz (SiO₂)) — mineral

Blue chalcedony (likely dyed or polished)

Chalcedony, microcrystalline quartz (SiO₂)

Mystic Topaz (Treated Quartz or Topaz) (Silicate Mineral (SiO2 or Al2SiO4(F,OH)2) with Titanium coating) — gemstone

Mystic Topaz (Treated Quartz or Topaz)

Silicate Mineral (SiO2 or Al2SiO4(F,OH)2) with Titanium coating

Quartz (Gray or Smoky variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Gray or Smoky variety)

Silicon Dioxide (SiO2)

Quartz with Tourmaline (Silicon Dioxide (SiO2) with Schorl (Complex Borosilicate)) — mineral

Quartz with Tourmaline

Silicon Dioxide (SiO2) with Schorl (Complex Borosilicate)

Elephant Skin Stone (Weathered Dolomitic Limestone) — sedimentary

Elephant Skin Stone

Weathered Dolomitic Limestone

Polished crescent-shaped stone pendant (Likely black jade, basalt, or other dark silicate stone; exact identification requires testing) — mineral

Polished crescent-shaped stone pendant

Likely black jade, basalt, or other dark silicate stone; exact identification requires testing

Slate (Slate (Metamorphosed Shale or Mudstone)) — metamorphic

Slate

Slate (Metamorphosed Shale or Mudstone)

Prehnite (Prehnite (Ca2Al(AlSi3O10)(OH)2)) — mineral

Prehnite

Prehnite (Ca2Al(AlSi3O10)(OH)2)

Jasper and Agate Beads (Mahogany Obsidian, Dyed Agate, Turquoise/African Turquoise) (Silicon Dioxide (SiO2) mixture with inclusions / Hydrated Copper Aluminum Phosphate) — gemstone

Jasper and Agate Beads (Mahogany Obsidian, Dyed Agate, Turquoise/African Turquoise)

Silicon Dioxide (SiO2) mixture with inclusions / Hydrated Copper Aluminum Phosphate

Rose Quartz Beads (Crystalline Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese) — gemstone

Rose Quartz Beads

Crystalline Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Goldstone (Aventurine Glass (Man-made glass with copper inclusions)) — mineraloid / man-made glass

Goldstone

Aventurine Glass (Man-made glass with copper inclusions)

mineraloid / man-made glass

Black Onyx (Silicon dioxide / Chalcedony (SiO2)) — mineral

Black Onyx

Silicon dioxide / Chalcedony (SiO2)

Rounded quartz-rich beach pebble (Likely milky quartz or quartzite (SiO₂)) — mineral

Rounded quartz-rich beach pebble

Likely milky quartz or quartzite (SiO₂)

Blue topaz (likely treated) (Topaz, Al₂SiO₄(F,OH)₂) — gemstone

Blue topaz (likely treated)

Topaz, Al₂SiO₄(F,OH)₂

Green Aventurine (Quartz (Silicon Dioxide with Fuchsite inclusions - SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)) — mineral

Green Aventurine

Quartz (Silicon Dioxide with Fuchsite inclusions - SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)

Polished blue stone, likely sodalite (Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂; possibly blue-dyed jasper or lapis lazuli) — mineral

Polished blue stone, likely sodalite

Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂; possibly blue-dyed jasper or lapis lazuli

Shiva Lingam (Polished Jasper) (Cryptocrystalline Quartz (SiO2) with Iron Oxide inclusions) — sedimentary

Shiva Lingam (Polished Jasper)

Cryptocrystalline Quartz (SiO2) with Iron Oxide inclusions

Quartz Pebble with Mineral Inclusions (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble with Mineral Inclusions

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Rough Diamond (Diamond (C)) — mineral

Rough Diamond

Diamond (C)

Aura Rose Quartz (SiO2 (Silicon Dioxide with Titanium/Gold coating)) — mineral

Aura Rose Quartz

SiO2 (Silicon Dioxide with Titanium/Gold coating)

Green Aventurine (Aventurine Quartz (SiO2 with Fuchsite inclusions)) — mineral

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Aventurine (Aventurine Quartz (SiO2 + Fuchsite mica)) — mineral

Aventurine

Aventurine Quartz (SiO2 + Fuchsite mica)

Citrine Quartz (or Heat-Treated Amethyst / Smoky Quartz) (Silicon Dioxide (SiO2)) — gemstone

Citrine Quartz (or Heat-Treated Amethyst / Smoky Quartz)

Silicon Dioxide (SiO2)

Milky quartz (Quartz, silicon dioxide (SiO₂)) — mineral

Milky quartz

Quartz, silicon dioxide (SiO₂)

Yellow Chalcedony (Tumbled/Cabochon) (Silicon dioxide (SiO2)) — mineral

Yellow Chalcedony (Tumbled/Cabochon)

Silicon dioxide (SiO2)

Dragon Vein Agate (Chalcedony (cryptocrystalline Quartz), SiO2) — mineral

Dragon Vein Agate

Chalcedony (cryptocrystalline Quartz), SiO2

Fuchsite or Green Mica Schist (K(Al,Cr)2(AlSi3O10)(OH)2) — metamorphic

Fuchsite or Green Mica Schist

K(Al,Cr)2(AlSi3O10)(OH)2

Quartzite Pebble (or River Agate/Chert) (Silicon Dioxide (SiO2)) — metamorphic

Quartzite Pebble (or River Agate/Chert)

Silicon Dioxide (SiO2)

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Cullet Glass (Slag) (Amorphous Silicon Dioxide (Man-made)) — Mineraloid

Cullet Glass (Slag)

Amorphous Silicon Dioxide (Man-made)

Crackle Agate / Dyed Agate (Agate (Silicon dioxide / SiO2)) — mineral

Crackle Agate / Dyed Agate

Agate (Silicon dioxide / SiO2)

Staurolite (Staurolite (Fe2Al9O6(SiO4)4(O,OH)2)) — mineral

Staurolite

Staurolite (Fe2Al9O6(SiO4)4(O,OH)2)