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

Red Tiger's Eye (Silicified Crocidolite (SiO2 with iron oxide inclusions)) — mineral

Red Tiger's Eye

Silicified Crocidolite (SiO2 with iron oxide inclusions)

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

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

mineral/gemstone

Amber (Succinite (specifically for Baltic amber); approximate formula C10H16O) — organic mineraloid

Amber

Succinite (specifically for Baltic amber); approximate formula C10H16O

organic mineraloid

Carnelian (Silicon dioxide (SiO2) with Iron Oxide impurities (Fe2O3)) — mineral

Carnelian

Silicon dioxide (SiO2) with Iron Oxide impurities (Fe2O3)

Blue Lace Agate (Heat-treated/Crackle Quartz variety) (Silicon Dioxide (SiO2)) — mineral

Blue Lace Agate (Heat-treated/Crackle Quartz variety)

Silicon Dioxide (SiO2)

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

Green Quartz (Prasiolite)

Crystalline Silicon Dioxide (SiO2)

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

Citrine (likely Heat-Treated Amethyst)

Silicon Dioxide (SiO2)

Peacock Ore (Bornite or Iridescent Chalcopyrite) (Bornite (Cu5FeS4) or Chalcopyrite (CuFeS2) with oxidation) — mineral

Peacock Ore (Bornite or Iridescent Chalcopyrite)

Bornite (Cu5FeS4) or Chalcopyrite (CuFeS2) with oxidation

Citrine (Heat-treated Amethyst) (Citrine Quartz (SiO2)) — Mineral (Tectosilicate)

Citrine (Heat-treated Amethyst)

Citrine Quartz (SiO2)

Mineral (Tectosilicate)

Bornite (Copper Iron Sulfide (Cu5FeS4)) — mineral

Bornite

Copper Iron Sulfide (Cu5FeS4)

Black Agate (Silicon Dioxide (SiO2) with carbon/iron inclusions) — sedimentary

Black Agate

Silicon Dioxide (SiO2) with carbon/iron inclusions

Pink tourmaline crystal (probable) (Elbaite tourmaline, Na(Li,Al)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄) — mineral

Pink tourmaline crystal (probable)

Elbaite tourmaline, Na(Li,Al)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄

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

Citrine (Raw)

Silicon Dioxide (SiO2) with iron impurities

Black Onyx (Silicon Dioxide (SiO2) - variety of Chalcedony) — mineral

Black Onyx

Silicon Dioxide (SiO2) - variety of Chalcedony

Polished black stone, likely black jasper or basalt (Most likely microcrystalline quartz (black jasper/chert), SiO₂; basalt is a plausible alternative) — mineral

Polished black stone, likely black jasper or basalt

Most likely microcrystalline quartz (black jasper/chert), SiO₂; basalt is a plausible alternative

Red Garnet (Almandine and Pyrope (Silicate minerals: Fe3Al2(SiO4)3 and Mg3Al2(SiO4)3)) — mineral

Red Garnet

Almandine and Pyrope (Silicate minerals: Fe3Al2(SiO4)3 and Mg3Al2(SiO4)3)

Jadeite (Jade) (Jadeite; NaAlSi2O6) — metamorphic

Jadeite (Jade)

Jadeite; NaAlSi2O6

Erythrite (or Lab-Grown Cobaltite/Cinnabar Analog) (Erythrite (Co3(AsO4)2·8H2O)) — mineral

Erythrite (or Lab-Grown Cobaltite/Cinnabar Analog)

Erythrite (Co3(AsO4)2·8H2O)

Fire Agate (Crackle Agate) (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — mineral

Fire Agate (Crackle Agate)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Green Jasper with Quartz veins (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Green Jasper with Quartz veins

Jasper (Silicon Dioxide, SiO2)

Purple Garnet (Magnesium Aluminum Silicate (Pyrope-Almandine series) Mg3Al2(SiO4)3) — gemstone

Purple Garnet

Magnesium Aluminum Silicate (Pyrope-Almandine series) Mg3Al2(SiO4)3

Dark green cabochon, likely serpentine or nephrite jade (Serpentine-group minerals, commonly antigorite/lizardite; possible nephrite (microcrystalline tremolite-actinolite)) — metamorphic

Dark green cabochon, likely serpentine or nephrite jade

Serpentine-group minerals, commonly antigorite/lizardite; possible nephrite (microcrystalline tremolite-actinolite)

Blue sapphire ring (Corundum, aluminum oxide (Al₂O₃), blue variety colored mainly by iron and titanium) — gemstone

Blue sapphire ring

Corundum, aluminum oxide (Al₂O₃), blue variety colored mainly by iron and titanium

Yellow Jade (Jadeite or Nephrite (various silicates)) — metamorphic

Yellow Jade

Jadeite or Nephrite (various silicates)

Popcorn (Zea mays everta (P. Wilson) (Botanical name for the corn variety)) — Organic/Biogenic

Popcorn

Zea mays everta (P. Wilson) (Botanical name for the corn variety)

Organic/Biogenic

Carnelian Agate (Silicon Dioxide with Iron Oxide impurities (SiO2)) — mineral

Carnelian Agate

Silicon Dioxide with Iron Oxide impurities (SiO2)

Peacock Ore (Bornite (Cu5FeS4) with surface tarnish) — mineral

Peacock Ore

Bornite (Cu5FeS4) with surface tarnish

Black Onyx (Silicon Dioxide (SiO2) with layered chalcedony) — mineral

Black Onyx

Silicon Dioxide (SiO2) with layered chalcedony

Slag Glass (Leland Blue variant) (Anthropogenic Vitreous Silicate) — mineral

Slag Glass (Leland Blue variant)

Anthropogenic Vitreous Silicate

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

Yellow Quartz (Citrine/Yellow Jasper mix)

Silicon Dioxide (SiO2)

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

Black Onyx

Chalcedony (Silicon Dioxide - SiO2)

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

Amethyst

Amethyst (Silicon Dioxide with iron impurities), SiO2

Green Quartz (Prasiolite variant or Aventurine) (Silicon Dioxide (SiO2)) — mineral

Green Quartz (Prasiolite variant or Aventurine)

Silicon Dioxide (SiO2)

Yellow Quartz (Citrine/Yellow Jasper Pebble) (Silicon Dioxide (SiO2)) — sedimentary

Yellow Quartz (Citrine/Yellow Jasper Pebble)

Silicon Dioxide (SiO2)

Blue Topaz (Al2SiO4(F,OH)2) — gemstone

Blue Topaz

Al2SiO4(F,OH)2

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)

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

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Red Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2 with Fe2O3 inclusions)) — metamorphic

Red Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with Fe2O3 inclusions)

Blue Topaz (Aluminum Silicate Fluoride Hydroxide (Al2SiO4(F,OH)2)) — gemstone

Blue Topaz

Aluminum Silicate Fluoride Hydroxide (Al2SiO4(F,OH)2)

Red Tiger's Eye (Pseudomorph of Quartz after Crocidolite (Silicon Dioxide: SiO2)) — gemstone

Red Tiger's Eye

Pseudomorph of Quartz after Crocidolite (Silicon Dioxide: SiO2)

Black Onyx (Black Chalcedony (SiO2)) — mineral

Black Onyx

Black Chalcedony (SiO2)

Faceted yellow gemstone, likely citrine (Citrine (quartz), SiO₂; possibly yellow sapphire or synthetic glass without testing) — gemstone

Faceted yellow gemstone, likely citrine

Citrine (quartz), SiO₂; possibly yellow sapphire or synthetic glass without testing