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

Carnelian Agate/Jasper blend (Silicon Dioxide (SiO2) - variety of Chalcedony) — mineral

Carnelian Agate/Jasper blend

Silicon Dioxide (SiO2) - variety of Chalcedony

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

Yellow Quartz / Citrine Quartz

Silicon Dioxide (SiO2)

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

Quartz (Citrine variety)

Silicon Dioxide (SiO2)

Yellow Quartz Pebble (SiO2 (Silicon Dioxide)) — mineral

Yellow Quartz Pebble

SiO2 (Silicon Dioxide)

Polished green calcite (often sold as “onyx marble”) (Calcite, CaCO₃; banded crystalline limestone/travertine) — mineral

Polished green calcite (often sold as “onyx marble”)

Calcite, CaCO₃; banded crystalline limestone/travertine

Blue quartz-like mineral specimen (Likely quartz (SiO₂), possibly dyed or coated; exact identification requires testing) — mineral

Blue quartz-like mineral specimen

Likely quartz (SiO₂), possibly dyed or coated; exact identification requires testing

Yellow chalcedony (likely lemon quartz or citrine) (Cryptocrystalline silica, SiO₂; possible quartz variety) — mineral

Yellow chalcedony (likely lemon quartz or citrine)

Cryptocrystalline silica, SiO₂; possible quartz variety

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

Citrine Quartz (Yellow Quartz)

Silicon Dioxide (SiO2) with iron impurities

Amber (Succinite (Fossilized Tree Resin)) — fossil

Amber

Succinite (Fossilized Tree Resin)

Tumbled green stone, likely aventurine or dyed agate (Tentatively quartz-rich green aventurine (SiO₂) or chrysoprase (microcrystalline chalcedony, SiO₂); identification is uncertain from the image) — mineral

Tumbled green stone, likely aventurine or dyed agate

Tentatively quartz-rich green aventurine (SiO₂) or chrysoprase (microcrystalline chalcedony, SiO₂); identification is uncertain from the image

Tumbled carnelian/chalcedony (Cryptocrystalline quartz, SiO₂ (iron-bearing chalcedony)) — mineral

Tumbled carnelian/chalcedony

Cryptocrystalline quartz, SiO₂ (iron-bearing chalcedony)

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

Yellow Quartz (Citrine Quartz)

Silicon Dioxide (SiO2)

Yellow Quartz (Rough) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Rough)

Silicon Dioxide (SiO2)

Rough Quartz (var. Citrine or Yellow Quartz) (Silicon Dioxide (SiO2)) — mineral

Rough Quartz (var. Citrine or Yellow Quartz)

Silicon Dioxide (SiO2)

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

Citrine

Silicon Dioxide (SiO2) with iron impurities

Bornite (Peacock Ore) (Bornite (Cu5FeS4)) — mineral

Bornite (Peacock Ore)

Bornite (Cu5FeS4)

Citrine (likely Heat-Treated) (Quartz (Silicon Dioxide, SiO2)) — mineral

Citrine (likely Heat-Treated)

Quartz (Silicon Dioxide, SiO2)

Green faceted gemstone pendant, likely green quartz (Quartz (SiO₂), possibly prasiolite or green-treated quartz) — gemstone

Green faceted gemstone pendant, likely green quartz

Quartz (SiO₂), possibly prasiolite or green-treated quartz

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

Yellow Quartz (Citrine Quartz Pebble)

Silicon Dioxide (SiO2)

Dyed and polished crackle agate bead (Agate, microcrystalline quartz (SiO₂), commonly artificially crackled and dyed) — mineral

Dyed and polished crackle agate bead

Agate, microcrystalline quartz (SiO₂), commonly artificially crackled and dyed

Quartz Pebble (Citrine or Iron-stained Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble (Citrine or Iron-stained Quartz)

Silicon Dioxide (SiO2)

Blue quartz (likely dyed or synthetic-treated quartz beads) (Quartz, silicon dioxide (SiO₂)) — mineral

Blue quartz (likely dyed or synthetic-treated quartz beads)

Quartz, silicon dioxide (SiO₂)

Amethyst bead bracelet (Amethyst, purple quartz (SiO₂)) — gemstone

Amethyst bead bracelet

Amethyst, purple quartz (SiO₂)

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

Yellow Quartz (Citrine or Quartzite Pebble)

Silicon Dioxide (SiO2)

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

Aura Quartz (Coated Quartz) (Silicon Dioxide (SiO2) treated with metallic vapor) — mineral

Aura Quartz (Coated Quartz)

Silicon Dioxide (SiO2) treated with metallic vapor

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

Heat-Treated Amethyst (Citrine Geode)

Silicon Dioxide (SiO2) with iron impurities

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

Quartz (Citrine or Smoky variety)

Silicon Dioxide (SiO2)

Yellow Quartz (SiO2 (Silicon Dioxide)) — mineral

Yellow Quartz

SiO2 (Silicon Dioxide)

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

Citrine (Tumbled Quartz)

Silicon Dioxide (SiO2)

Peacock ore (Iridescent chalcopyrite, commonly bornite-coated or artificially treated copper sulfide) — mineral

Peacock ore

Iridescent chalcopyrite, commonly bornite-coated or artificially treated copper sulfide

Polished banded agate pebble (Chalcedony (microcrystalline quartz), SiO₂, with iron-oxide or other mineral banding) — mineral

Polished banded agate pebble

Chalcedony (microcrystalline quartz), SiO₂, with iron-oxide or other mineral banding

Citrine (Silicon Dioxide (SiO2)) — mineral

Citrine

Silicon Dioxide (SiO2)

Dragon Vein Agate (Chalcedony (cryptocrystalline silica, SiO2) variety Agate) — mineral

Dragon Vein Agate

Chalcedony (cryptocrystalline silica, SiO2) variety Agate

Citrine (Quartz (SiO2) - variety Citrine) — Mineral

Citrine

Quartz (SiO2) - variety Citrine

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

Citrine

Silicon Dioxide (SiO2) with iron impurities

Amber and Citrine Quartz (Succinite (Amber) and Silicon Dioxide (SiO2 / Citrine)) — mineral

Amber and Citrine Quartz

Succinite (Amber) and Silicon Dioxide (SiO2 / Citrine)

Metallic sulfide mineral fragment, likely bornite or chalcopyrite (Bornite (Cu₅FeS₄) or chalcopyrite (CuFeS₂)) — mineral

Metallic sulfide mineral fragment, likely bornite or chalcopyrite

Bornite (Cu₅FeS₄) or chalcopyrite (CuFeS₂)

Citrine quartz crystal (Quartz, silicon dioxide (SiO₂); yellow variety commonly called citrine) — mineral

Citrine quartz crystal

Quartz, silicon dioxide (SiO₂); yellow variety commonly called citrine

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

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Citrine (Silicon Dioxide (SiO2)) — mineral

Citrine

Silicon Dioxide (SiO2)

Citrine (Quartz (SiO₂)) — mineral

Citrine

Quartz (SiO₂)