Rock Identifier

Category

Organic (If Resin) Or Synthetic (If Glass); Simulating Sedimentary Or Metamorphic (For Natural Stones)

Browse organic (if resin) or synthetic (if glass); simulating sedimentary or metamorphic (for natural stones) specimens identified by the Rock Identifier community.

Blue Aventurine (Silicon Dioxide (SiO2) containing Dumortierite or Crocidolite inclusions) — mineral

Blue Aventurine

Silicon Dioxide (SiO2) containing Dumortierite or Crocidolite inclusions

Chert (Jasper/Flint variation) (Chert (SiO2)) — sedimentary

Chert (Jasper/Flint variation)

Chert (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Polished brown jasper (likely ocean or brecciated jasper) (Microcrystalline quartz/chalcedony, SiO₂, colored mainly by iron oxides) — mineral

Polished brown jasper (likely ocean or brecciated jasper)

Microcrystalline quartz/chalcedony, SiO₂, colored mainly by iron oxides

Quartzite Pebble (Quartzite (SiO2)) — metamorphic

Quartzite Pebble

Quartzite (SiO2)

Diamond (or Diamond Simulant) (Carbon (C) if diamond, various if simulant (e.g., Cubic Zirconia - ZrO2, Moissanite - SiC)) — gemstone

Diamond (or Diamond Simulant)

Carbon (C) if diamond, various if simulant (e.g., Cubic Zirconia - ZrO2, Moissanite - SiC)

Blue topaz-style pendant (stone identity uncertain) (Possibly blue topaz (Al₂SiO₄(F,OH)₂); the image cannot confirm whether the stone is natural or synthetic) — gemstone

Blue topaz-style pendant (stone identity uncertain)

Possibly blue topaz (Al₂SiO₄(F,OH)₂); the image cannot confirm whether the stone is natural or synthetic

Cut red gemstone in a gold ring (Likely ruby (corundum, Al₂O₃), though red spinel or garnet is also possible from the image) — gemstone

Cut red gemstone in a gold ring

Likely ruby (corundum, Al₂O₃), though red spinel or garnet is also possible from the image

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

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

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

Green Aventurine

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

Blue Apatite (Apatite - Ca5(PO4)3(F,Cl,OH)) — mineral

Blue Apatite

Apatite - Ca5(PO4)3(F,Cl,OH)

Amber (Succinite) — Organic (Mineraloid)

Amber

Succinite

Organic (Mineraloid)

Beaded mineral/crystal jewelry (likely turquoise and coral accents) (Variable; blue beads may be turquoise (CuAl6(PO4)4(OH)8·4H2O), with possible dyed howlite, glass, or composite materials) — gemstone

Beaded mineral/crystal jewelry (likely turquoise and coral accents)

Variable; blue beads may be turquoise (CuAl6(PO4)4(OH)8·4H2O), with possible dyed howlite, glass, or composite materials

Quartz (Engineered Stone Countertop) (Silicon Dioxide (SiO2) with polymer resins) — Sedimentary-like (Industrial Composite)

Quartz (Engineered Stone Countertop)

Silicon Dioxide (SiO2) with polymer resins

Sedimentary-like (Industrial Composite)

Emerald in Matrix (Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities) — gemstone

Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Tumbled garnet (likely almandine) (Almandine garnet, iron-aluminum nesosilicate (Fe₃Al₂Si₃O₁₂)) — gemstone

Tumbled garnet (likely almandine)

Almandine garnet, iron-aluminum nesosilicate (Fe₃Al₂Si₃O₁₂)

Goldstone (Red) (Aventurine Glass (Cupriferous glass)) — Synthetic Glass (Man-made)

Goldstone (Red)

Aventurine Glass (Cupriferous glass)

Synthetic Glass (Man-made)

Black Tourmaline (Schorl (Na(Fe²⁺)₃Al₆(OH)₄(BO₃)₃Si₆O₁₈)) — Mineral

Black Tourmaline

Schorl (Na(Fe²⁺)₃Al₆(OH)₄(BO₃)₃Si₆O₁₈)

Quartzite Pebble (Metamorphic Quartz-rich Rock) — metamorphic

Quartzite Pebble

Metamorphic Quartz-rich Rock

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

Green Quartz (Aventurine)

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

Mixed River Pebbles (Clastic Sedimentary Alluvial Deposit / Polymictic Conglomerate Clasts) — sedimentary

Mixed River Pebbles

Clastic Sedimentary Alluvial Deposit / Polymictic Conglomerate Clasts

Quartz pebble (Silicon dioxide (SiO2)) — mineral

Quartz pebble

Silicon dioxide (SiO2)

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

Citrine (Silicon dioxide (SiO2)) — mineral

Citrine

Silicon dioxide (SiO2)

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

Rough Emerald (Beryl) (Emerald (Be3Al2(SiO3)6 with Cr/V impurities)) — mineral

Rough Emerald (Beryl)

Emerald (Be3Al2(SiO3)6 with Cr/V impurities)

Chert Nodule / Ironstone Concretion (Microcrystalline Quartz (SiO2) with Iron Oxides) — sedimentary

Chert Nodule / Ironstone Concretion

Microcrystalline Quartz (SiO2) with Iron Oxides

Banded Chert / Jasper (Silicon Dioxide (SiO2)) — sedimentary

Banded Chert / Jasper

Silicon Dioxide (SiO2)

Magnetite (Lodestone variety) (Magnetite (Fe3O4)) — mineral

Magnetite (Lodestone variety)

Magnetite (Fe3O4)

Chert (River Pebble) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (River Pebble)

Microcrystalline Quartz (SiO2)

Chert (Green Jasper) (Microcrystalline Quartz (SiO2) with iron silicate inclusions) — sedimentary

Chert (Green Jasper)

Microcrystalline Quartz (SiO2) with iron silicate inclusions

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

Amber (Succinite) — Organic (Mineraloid)

Amber

Succinite

Organic (Mineraloid)

Carved labradorite fish (Labradorite, calcium-rich plagioclase feldspar (approximately (Ca,Na)(Al,Si)₄O₈)) — mineral

Carved labradorite fish

Labradorite, calcium-rich plagioclase feldspar (approximately (Ca,Na)(Al,Si)₄O₈)

Amber (Succinite) — mineraloid

Amber

Succinite

Tumbled quartz-rich pebble (likely quartzite or vein quartz) (Quartz (SiO₂), possibly quartzite with minor iron-oxide staining) — metamorphic

Tumbled quartz-rich pebble (likely quartzite or vein quartz)

Quartz (SiO₂), possibly quartzite with minor iron-oxide staining

Banded Gneiss River Pebble (Gneiss) — metamorphic

Banded Gneiss River Pebble

Gneiss

Chert (Flint) (Chert (Cryptocrystalline Quartz, SiO2)) — sedimentary

Chert (Flint)

Chert (Cryptocrystalline Quartz, SiO2)

Strawberry Quartz (Hematoid Quartz) (Silicon Dioxide with Hematite/Goethite inclusions (SiO2 + Fe2O3)) — mineral

Strawberry Quartz (Hematoid Quartz)

Silicon Dioxide with Hematite/Goethite inclusions (SiO2 + Fe2O3)

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

Tumbled Jasper and Tiger's Eye (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Tumbled Jasper and Tiger's Eye

Silicon Dioxide (SiO2) with iron oxide inclusions

Polished hematite bead necklace (Hematite (iron(III) oxide, Fe₂O₃), likely polished beads) — mineral

Polished hematite bead necklace

Hematite (iron(III) oxide, Fe₂O₃), likely polished beads