Rock Identifier

Category

Synthetic Glass (Often Categorized As A Simulated Mineral)

Browse synthetic glass (often categorized as a simulated mineral) specimens identified by the Rock Identifier community.

Learn about Synthetic Glass (Often Categorized As A Simulated Mineral) in the encyclopedia

Opalite

Sideromelane

Pele's Tears

Porphyritic Obsidian

Porphyritic Obsidian

Anatase

Red Obsidian

Euxenite

Gray Obsidian

Gold Sheen Obsidian

Pink Lady Obsidian

Zircon

Aventurine

Polished honey-yellow quartz-like crystal (Quartz (SiO₂), possibly citrine or heat-treated amethyst) — gemstone

Polished honey-yellow quartz-like crystal

Quartz (SiO₂), possibly citrine or heat-treated amethyst

Lapis Lazuli (Lapis lazuli (Rock composed primarily of Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Calcite, and Pyrite)) — metamorphic

Lapis Lazuli

Lapis lazuli (Rock composed primarily of Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Calcite, and Pyrite)

Polished blue-black cabochon, likely blue obsidian or dyed glass-like stone (Indeterminate from image; possible natural obsidian (volcanic glass), commonly SiO₂-rich rhyolitic glass) — gemstone

Polished blue-black cabochon, likely blue obsidian or dyed glass-like stone

Indeterminate from image; possible natural obsidian (volcanic glass), commonly SiO₂-rich rhyolitic glass

Carborundum (Silicon Carbide) (Silicon Carbide (SiC)) — mineral

Carborundum (Silicon Carbide)

Silicon Carbide (SiC)

Parti Sapphire (Corundum (Al2O3)) — mineral

Parti Sapphire

Corundum (Al2O3)

Lapis Lazuli (Lazurite-rich metamorphic rock (approx. Na6Ca2(Al6Si6O24)(S,SO4,Cl)1,2)) — metamorphic

Lapis Lazuli

Lazurite-rich metamorphic rock (approx. Na6Ca2(Al6Si6O24)(S,SO4,Cl)1,2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Turquoise (Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]) — Mineral

Turquoise

Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]

Cubic Zirconia (Cubic Zirconium Dioxide (ZrO2)) — gemstone

Cubic Zirconia

Cubic Zirconium Dioxide (ZrO2)

Lapis Lazuli (Lapis Lazuli (a rock composed primarily of Lazurite (Na,Ca)₈[(S,Cl,SO₄,OH)₂|(Al₆Si₆O₂₄)], with varying amounts of Calcite, Pyrite, and Sodalite.)) — Mineral

Lapis Lazuli

Lapis Lazuli (a rock composed primarily of Lazurite (Na,Ca)₈[(S,Cl,SO₄,OH)₂|(Al₆Si₆O₂₄)], with varying amounts of Calcite, Pyrite, and Sodalite.)

Sedimentary Rock with Crafts (Pet Rock) (Sedimentary rock decorated with synthetic materials) — sedimentary

Sedimentary Rock with Crafts (Pet Rock)

Sedimentary rock decorated with synthetic materials

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

Diamond (Faceted)

Diamond (Pure Carbon, C)

Note: Item is not a geological specimen (Polyester mesh and Ethylene-vinyl acetate (EVA) polymer) — Synthetic / Anthropogenic Material

Note: Item is not a geological specimen

Polyester mesh and Ethylene-vinyl acetate (EVA) polymer

Synthetic / Anthropogenic Material

Bismuth (Bismuth (Bi)) — mineral

Bismuth

Bismuth (Bi)

Ruby (Corundum (Al2O3)) — mineral

Ruby

Corundum (Al2O3)

Diamond (or Cut Gemstone / Cubic Zirconia) (Carbon (C)) — gemstone

Diamond (or Cut Gemstone / Cubic Zirconia)

Carbon (C)

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

Rough Diamond (Uncut Diamond)

Native Carbon (C)

Colorless faceted gemstone (likely cubic zirconia) (Cubic zirconia, zirconium dioxide (ZrO₂); possibly synthetic quartz or glass imitation) — gemstone

Colorless faceted gemstone (likely cubic zirconia)

Cubic zirconia, zirconium dioxide (ZrO₂); possibly synthetic quartz or glass imitation

Faceted golden beryl (likely heliodor) (Beryl, Be₃Al₂Si₆O₁₈; yellow color from iron impurities) — gemstone

Faceted golden beryl (likely heliodor)

Beryl, Be₃Al₂Si₆O₁₈; yellow color from iron impurities

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Amazonite (KAlSi3O8 (Potassium Feldspar, variety of Microcline)) — Mineral

Amazonite

KAlSi3O8 (Potassium Feldspar, variety of Microcline)

Ruby (mounted cabochon) (Corundum, Al₂O₃; red color typically from chromium) — gemstone

Ruby (mounted cabochon)

Corundum, Al₂O₃; red color typically from chromium

Colorless Gemstone (possibly Diamond or Cubic Zirconia) (C (Diamond) or ZrO2 (Cubic Zirconia)) — gemstone

Colorless Gemstone (possibly Diamond or Cubic Zirconia)

C (Diamond) or ZrO2 (Cubic Zirconia)

Emerald (Beryl, Be₃Al₂(SiO₃)₆, colored green mainly by chromium and/or vanadium) — gemstone

Emerald

Beryl, Be₃Al₂(SiO₃)₆, colored green mainly by chromium and/or vanadium

Aquamarine (Beryl (Be3Al2Si6O18), specifically the blue-green variety) — Mineral

Aquamarine

Beryl (Be3Al2Si6O18), specifically the blue-green variety

Cubic Zirconia (CZ) (Cubic Zirconium Dioxide (ZrO2)) — mineral (synthetic)

Cubic Zirconia (CZ)

Cubic Zirconium Dioxide (ZrO2)

mineral (synthetic)

Ruby (Corundum (Al2O3)) — mineral

Ruby

Corundum (Al2O3)

Black spinel bead bracelet (Spinel (magnesium aluminate), MgAl₂O₄) — gemstone

Black spinel bead bracelet

Spinel (magnesium aluminate), MgAl₂O₄

Slag Glass (Cullet) (Amorphous Silica (man-made), primarily SiO2 with trace metal oxides) — Mineraloid / Synthetic Glass

Slag Glass (Cullet)

Amorphous Silica (man-made), primarily SiO2 with trace metal oxides

Mineraloid / Synthetic Glass

Quartzite (Engineered Stone) (Silicon Dioxide (SiO2) based synthetic composite) — metamorphic

Quartzite (Engineered Stone)

Silicon Dioxide (SiO2) based synthetic composite

Lapis Lazuli (Lapis Lazuli (a rock composed primarily of Lazurite, Sodalite, Calcite, and Pyrite)) — Mineral

Lapis Lazuli

Lapis Lazuli (a rock composed primarily of Lazurite, Sodalite, Calcite, and Pyrite)

Diamond (appearing as a jewelry centerpiece) (Diamond (Formula: C)) — mineral

Diamond (appearing as a jewelry centerpiece)

Diamond (Formula: C)

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

Digital Multimeter (Synthetic Object)

Digital Multimeter (DMM)

Diamond (or Cubic Zirconia simulant) (C (Carbon) or ZrO2 (Zirconium Dioxide)) — gemstone

Diamond (or Cubic Zirconia simulant)

C (Carbon) or ZrO2 (Zirconium Dioxide)

Painted River Rock (Anthropogenic-modified Siliciclastic Sedimentary Rock) — Sedimentary

Painted River Rock

Anthropogenic-modified Siliciclastic Sedimentary Rock

Coal (Anthracite/Bituminous) (Carbo fossilium (primarily Carbon)) — sedimentary

Coal (Anthracite/Bituminous)

Carbo fossilium (primarily Carbon)

Clear faceted gemstone, likely quartz (rock crystal) (Quartz, silicon dioxide (SiO₂); exact identity cannot be confirmed from the glare-heavy image) — gemstone

Clear faceted gemstone, likely quartz (rock crystal)

Quartz, silicon dioxide (SiO₂); exact identity cannot be confirmed from the glare-heavy image

Chalcanthite (Likely Synthetic/Lab-Grown) (Hydrated copper(II) sulfate (CuSO4·5H2O)) — mineral

Chalcanthite (Likely Synthetic/Lab-Grown)

Hydrated copper(II) sulfate (CuSO4·5H2O)

Opalite (Man-made Glass (SiO2 + additives)) — mineraloid (synthetic)

Opalite

Man-made Glass (SiO2 + additives)

mineraloid (synthetic)

Pink Dyed Agate (Silicon Dioxide (SiO2) with synthetic pigment) — mineral

Pink Dyed Agate

Silicon Dioxide (SiO2) with synthetic pigment

Dyed Agate (Silicon Dioxide (SiO2) with synthetic dyes) — mineral

Dyed Agate

Silicon Dioxide (SiO2) with synthetic dyes

Cubic Zirconia (CZ) (Cubic Zirconium Dioxide (ZrO2)) — mineral (synthetic)

Cubic Zirconia (CZ)

Cubic Zirconium Dioxide (ZrO2)

mineral (synthetic)