Rock Identifier

Category

Mineral (Treated)

Browse mineral (treated) specimens identified by the Rock Identifier community.

Learn about Mineral (Treated) in the encyclopedia

Red Agate

Citrine

Andesine

Andamooka Opal

Glauconite

Hutcheonite

Halite

Sperrylite

Baddeleyite

Anatase

Brookite

Talc

Citrine Quartz (Crystalline Silicon Dioxide (SiO2) with Ferric Iron impurities) — mineral

Citrine Quartz

Crystalline Silicon Dioxide (SiO2) with Ferric Iron impurities

Yellow Quartz (Citrine or Quartzite Pebble) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine or Quartzite Pebble)

Silicon Dioxide (SiO2)

Black Onyx (Onyx (Silicon Dioxide, SiO2)) — mineral

Black Onyx

Onyx (Silicon Dioxide, SiO2)

Yellow Quartz (Citrine/Yellow Jasper) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine/Yellow Jasper)

Silicon Dioxide (SiO2)

Black Onyx (Tumbled) (Chalcedony (Silicon Dioxide, SiO2)) — mineral

Black Onyx (Tumbled)

Chalcedony (Silicon Dioxide, SiO2)

Prasiolite (Green Quartz) (Silicon Dioxide (SiO2) with iron impurities) — mineral

Prasiolite (Green Quartz)

Silicon Dioxide (SiO2) with iron impurities

Purple Dyed Dalmatian Stone (Dyed Peralkaline Trachyte) — igneous

Purple Dyed Dalmatian Stone

Dyed Peralkaline Trachyte

Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2 with Iron inclusions)) — metamorphic

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with Iron inclusions)

Blue Topaz (Al2SiO4(F,OH)2 (Fluorine-bearing aluminum silicate)) — mineral

Blue Topaz

Al2SiO4(F,OH)2 (Fluorine-bearing aluminum silicate)

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

Citrine Quartz

Citrine (Silicon Dioxide, SiO2)

Lapis lazuli and green-blue chalcedony jewelry (Lapis lazuli: lazurite-bearing metamorphic rock, chiefly lazurite (Na₃Ca(Al₃Si₃O₁₂)S) with calcite and pyrite; second stone: likely chrysoprase or green-blue chalcedony (microcrystalline quartz, SiO₂)) — gemstone

Lapis lazuli and green-blue chalcedony jewelry

Lapis lazuli: lazurite-bearing metamorphic rock, chiefly lazurite (Na₃Ca(Al₃Si₃O₁₂)S) with calcite and pyrite; second stone: likely chrysoprase or green-blue chalcedony (microcrystalline quartz, SiO₂)

Tumbled yellow quartz (Quartz (SiO₂), likely iron-stained milky quartz or pale citrine) — mineral

Tumbled yellow quartz

Quartz (SiO₂), likely iron-stained milky quartz or pale citrine

Quartz (Citrine / Yellow Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Citrine / Yellow Quartz)

Silicon Dioxide (SiO2)

Yellow Quartz / Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz / Citrine Quartz

Silicon Dioxide (SiO2)

Black Onyx (Cryptocrystalline Quartz (SiO2)) — mineral

Black Onyx

Cryptocrystalline Quartz (SiO2)

Onyx (Black Onyx) (Silicon Dioxide (SiO2) - Chalcedony variety) — Mineral

Onyx (Black Onyx)

Silicon Dioxide (SiO2) - Chalcedony variety

Heat-Treated Citrine (Amethyst) (Silicon Dioxide (SiO2) with iron impurities) — mineral

Heat-Treated Citrine (Amethyst)

Silicon Dioxide (SiO2) with iron impurities

Bornite (peacock ore), likely with chalcopyrite (Bornite, Cu5FeS4; associated copper sulfides may include chalcopyrite, CuFeS2) — mineral

Bornite (peacock ore), likely with chalcopyrite

Bornite, Cu5FeS4; associated copper sulfides may include chalcopyrite, CuFeS2

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

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

Silicon Dioxide (SiO2)

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

Blue Cracked Quartz (Dyed Fire Crackle Quartz) (Silicon Dioxide (SiO2) with synthetic dye) — mineral

Blue Cracked Quartz (Dyed Fire Crackle Quartz)

Silicon Dioxide (SiO2) with synthetic dye

Oak-grain Laminate (Industrial/Decorative Furniture Finish) (Melamine Resin-impregnated Decorative Paper on Particleboard (Cellulose/Thermosetting Plastic)) — not a rock (synthetic material)

Oak-grain Laminate (Industrial/Decorative Furniture Finish)

Melamine Resin-impregnated Decorative Paper on Particleboard (Cellulose/Thermosetting Plastic)

not a rock (synthetic material)

Iron-stained quartz crystal (Quartz (SiO₂), likely limonite/goethite inclusions or surface coating) — mineral

Iron-stained quartz crystal

Quartz (SiO₂), likely limonite/goethite inclusions or surface coating

Tumbled yellow quartz (likely citrine or iron-stained quartz) (Quartz, silicon dioxide (SiO₂); yellow coloration likely from iron impurities) — mineral

Tumbled yellow quartz (likely citrine or iron-stained quartz)

Quartz, silicon dioxide (SiO₂); yellow coloration likely from iron impurities

Dyed Quartz Pendant (Silicon Dioxide (SiO2) with artificial dye) — mineral

Dyed Quartz Pendant

Silicon Dioxide (SiO2) with artificial dye

Onyx (Black Onyx) (Silicon Dioxide (SiO2)) — mineral

Onyx (Black Onyx)

Silicon Dioxide (SiO2)

Pink agate (likely dyed or coated) (Microcrystalline quartz, SiO₂ (chalcedony/agate)) — mineral

Pink agate (likely dyed or coated)

Microcrystalline quartz, SiO₂ (chalcedony/agate)

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

Turquoise

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

Emerald (Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities) — mineral

Emerald

Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities

Ruby (Corundum (Al2O3 with Chromium trace impurities)) — mineral

Ruby

Corundum (Al2O3 with Chromium trace impurities)

Peacock ore (iridescent chalcopyrite) (Chalcopyrite, CuFeS₂, commonly surface-treated to enhance iridescence) — mineral

Peacock ore (iridescent chalcopyrite)

Chalcopyrite, CuFeS₂, commonly surface-treated to enhance iridescence

Green Quartz (Prasiolite) (Silicon Dioxide (SiO2)) — mineral

Green Quartz (Prasiolite)

Silicon Dioxide (SiO2)

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

Yellow Quartz (Citrine alternative)

Silicon Dioxide (SiO2) with iron impurities

Carnelian (a variety of Chalcedony) (Silicon Dioxide (SiO₂)) — Mineral

Carnelian (a variety of Chalcedony)

Silicon Dioxide (SiO₂)

Chrome Diopside (Magnesium Calcium Silicate (MgCaSi2O6) containing Chromium impurities) — mineral

Chrome Diopside

Magnesium Calcium Silicate (MgCaSi2O6) containing Chromium impurities

Sapphire (Corundum (Al2O3)) — mineral

Sapphire

Corundum (Al2O3)

Yellow Quartz (Citrine/Yellow Jasper mix) (Silicon Dioxide (SiO2) with iron oxide inclusions) — mineral

Yellow Quartz (Citrine/Yellow Jasper mix)

Silicon Dioxide (SiO2) with iron oxide inclusions

Lemon Quartz (Silicon Dioxide (SiO2)) — mineral

Lemon Quartz

Silicon Dioxide (SiO2)

Bornite (Bornite (Cu5FeS4)) — mineral

Bornite

Bornite (Cu5FeS4)

Dragon Vein Agate (Chalcedony (Quartz) - SiO2) — mineral

Dragon Vein Agate

Chalcedony (Quartz) - SiO2

Blue Quartz / Glass Gemstone Pendant (SiO2 (Silicon Dioxide) or Synthetic Glass) — gemstone

Blue Quartz / Glass Gemstone Pendant

SiO2 (Silicon Dioxide) or Synthetic Glass

Amber (and Citrine Quartz) (Succinite (Amber) and Silicon Dioxide (SiO2)) — Organic Mineraloid and Mineral

Amber (and Citrine Quartz)

Succinite (Amber) and Silicon Dioxide (SiO2)

Organic Mineraloid and Mineral