Rock Identifier

Category

Mineral With Artificial Coating

Browse mineral with artificial coating specimens identified by the Rock Identifier community.

Learn about Mineral With Artificial Coating in the encyclopedia

Black Shale

Sodalite

Galena

Pezzottaite

Serpentine

Blue Apatite

Tangerine Quartz

Tangerine Quartz

Shungite

Super Seven

Rock Salt

Anatase

Brookite

Milky Quartz with Algae/Chlorite (Silicon Dioxide (SiO2)) — mineral

Milky Quartz with Algae/Chlorite

Silicon Dioxide (SiO2)

Tumbled Quartz (Silicon Dioxide (SiO2)) — mineral

Tumbled Quartz

Silicon Dioxide (SiO2)

Druzy Quartz on Quartz Base (Silicon Dioxide (SiO2)) — mineral

Druzy Quartz on Quartz Base

Silicon Dioxide (SiO2)

Tumbled yellow quartz (likely citrine or iron-stained quartz) (Quartz, SiO₂; yellow color may result from iron staining, but the photo cannot confirm citrine) — mineral

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

Quartz, SiO₂; yellow color may result from iron staining, but the photo cannot confirm citrine

Dyed Agate (Agate (SiO2)) — Mineral

Dyed Agate

Agate (SiO2)

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

Yellow Quartz (Citrine type/Tumbled Quartz)

Silicon Dioxide (SiO2)

Blue goldstone beads (Man-made aventurine glass (silica glass with metallic copper inclusions), not natural lapis lazuli) — mineral

Blue goldstone beads

Man-made aventurine glass (silica glass with metallic copper inclusions), not natural lapis lazuli

Dyed blue howlite or magnesite (tumbled stone) (Howlite: Ca₂B₅SiO₉(OH)₅; commonly sold dyed blue to imitate turquoise) — mineral

Dyed blue howlite or magnesite (tumbled stone)

Howlite: Ca₂B₅SiO₉(OH)₅; commonly sold dyed blue to imitate turquoise

Pink Dyed Agate (Silicon Dioxide (SiO2) - Variety Agate) — mineral

Pink Dyed Agate

Silicon Dioxide (SiO2) - Variety Agate

Red Tigers Eye (Bull's Eye) (SiO2) — Mineral

Red Tigers Eye (Bull's Eye)

SiO2

Quartz Druzy / Quartz Crystal Cluster (Silicon Dioxide (SiO2)) — mineral

Quartz Druzy / Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Small translucent tumbled crystal or gemstone (Indeterminate; likely quartz (SiO₂), possibly citrine or glass-like chalcedony) — mineral

Small translucent tumbled crystal or gemstone

Indeterminate; likely quartz (SiO₂), possibly citrine or glass-like chalcedony

Golden druzy quartz geode (Quartz, SiO₂, lining a geode cavity; likely iron-oxide stained) — mineral

Golden druzy quartz geode

Quartz, SiO₂, lining a geode cavity; likely iron-oxide stained

Milky quartz (iron-stained quartz) (Quartz, silicon dioxide (SiO₂)) — mineral

Milky quartz (iron-stained quartz)

Quartz, silicon dioxide (SiO₂)

Quartz-rich rock fragment, likely milky quartz with iron staining (Quartz (SiO₂), possibly in a quartz-rich vein rock) — mineral

Quartz-rich rock fragment, likely milky quartz with iron staining

Quartz (SiO₂), possibly in a quartz-rich vein rock

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Turquoise (Blue Howlite / Magnesite imitation) (CuAl6(PO4)4(OH)8·4H2O (for natural Turquoise); Ca2B5SiO9(OH)5 (for Howlite)) — mineral

Turquoise (Blue Howlite / Magnesite imitation)

CuAl6(PO4)4(OH)8·4H2O (for natural Turquoise); Ca2B5SiO9(OH)5 (for Howlite)

Tangerine Quartz (Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)) — mineral

Tangerine Quartz

Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)

Dyed blue tumbled stone, likely howlite or magnesite (Howlite (Ca₂B₅SiO₉(OH)₅) or magnesite (MgCO₃), artificially dyed blue) — mineral

Dyed blue tumbled stone, likely howlite or magnesite

Howlite (Ca₂B₅SiO₉(OH)₅) or magnesite (MgCO₃), artificially dyed blue

Dyed Agate (Chalcedony (SiO2)) — mineral

Dyed Agate

Chalcedony (SiO2)

Iron-stained quartz (Quartz (SiO₂), with limonite/goethite coatings) — mineral

Iron-stained quartz

Quartz (SiO₂), with limonite/goethite coatings

Goldstone (Man-made glass infused with copper particles) — gemstone

Goldstone

Man-made glass infused with copper particles

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

Amethyst (Cabochon)

Silicon Dioxide (SiO2) with iron impurities

Dyed Cracked Agate (Silicon Dioxide (Quartz variety, SiO2)) — gemstone

Dyed Cracked Agate

Silicon Dioxide (Quartz variety, SiO2)

Dyed Quartz (Candy Quartz / Aura Quartz Imitation) (Silicon Dioxide (SiO2)) — mineral

Dyed Quartz (Candy Quartz / Aura Quartz Imitation)

Silicon Dioxide (SiO2)

Blue Agate (Dyed Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Blue Agate (Dyed Chalcedony)

Silicon Dioxide (SiO2)

Labradorite (Labradorite, a plagioclase feldspar: approximately (Ca,Na)(Al,Si)₄O₈) — mineral

Labradorite

Labradorite, a plagioclase feldspar: approximately (Ca,Na)(Al,Si)₄O₈

Dyed red crystal aggregate, likely quartz or salt (Uncertain; possibly dyed quartz (SiO₂) or halite (NaCl)) — mineral

Dyed red crystal aggregate, likely quartz or salt

Uncertain; possibly dyed quartz (SiO₂) or halite (NaCl)

Desert Varnish on Sandstone (Ferromanganese coating on Quartz Arenite) — sedimentary

Desert Varnish on Sandstone

Ferromanganese coating on Quartz Arenite

Dyed Quartz Geode (Dyed crystalline quartz (Silicon Dioxide, SiO2)) — mineral

Dyed Quartz Geode

Dyed crystalline quartz (Silicon Dioxide, SiO2)

Dyed Purple Agate (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — mineral

Dyed Purple Agate

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Quartz (Druzy / Crystalline) (Silicon Dioxide (SiO2)) — mineral

Quartz (Druzy / Crystalline)

Silicon Dioxide (SiO2)

Orange Calcite point (Calcite (Calcium Carbonate, CaCO3)) — mineral

Orange Calcite point

Calcite (Calcium Carbonate, CaCO3)

Peacock ore (iridescent bornite/chalcopyrite) (Bornite (Cu₅FeS₄), commonly sold as heat-treated chalcopyrite (CuFeS₂)) — mineral

Peacock ore (iridescent bornite/chalcopyrite)

Bornite (Cu₅FeS₄), commonly sold as heat-treated chalcopyrite (CuFeS₂)

Prasiolite (Silicon Dioxide (SiO2)) — mineral

Prasiolite

Silicon Dioxide (SiO2)

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

Rough Quartz (var. Citrine or Yellow Quartz)

Silicon Dioxide (SiO2)

Mixed Tumbled Gemstones (Various silicate and oxide minerals) — mineral

Mixed Tumbled Gemstones

Various silicate and oxide minerals

Mixed Tumbled Gemstones and Minerals (Various silicate and oxide minerals) — mineral

Mixed Tumbled Gemstones and Minerals

Various silicate and oxide minerals

Clear Quartz Crystal (Silicon Dioxide (SiO2)) — mineral

Clear Quartz Crystal

Silicon Dioxide (SiO2)

Polished chrysocolla-matrix stone (probable) (Chrysocolla, hydrated copper aluminosilicate; likely mixed with quartz, turquoise, or copper minerals) — mineral

Polished chrysocolla-matrix stone (probable)

Chrysocolla, hydrated copper aluminosilicate; likely mixed with quartz, turquoise, or copper minerals

Dyed Agate (SiO2 (Silicon Dioxide) - Chalcedony variety) — Mineral

Dyed Agate

SiO2 (Silicon Dioxide) - Chalcedony variety