Dyed Agate
SiO2
Mineral
Category
Mineral With Artificial Coating
Browse mineral with artificial coating specimens identified by the Rock Identifier community.
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Dyed Agate
Chalcedony (SiO2)
mineral
Dyed Agate
Agate (Silicon dioxide)
Mineral
Purple druzy quartz (likely dyed or coated)
Quartz, SiO₂ (trigonal crystal system)
mineral
Blue Agate (Dyed Chalcedony)
Silicon Dioxide (SiO2)
mineral
Dyed Agate
Silicon Dioxide (SiO2)
mineral
Blue-dyed Quartz Druzy
Silicon Dioxide (SiO2) with artificial pigment
mineral
Blue Dyed Agate
Chalcedony (Silicon Dioxide, SiO2)
mineral
Purple Agate (Dyed Chalcedony)
SiO2 (Silicon Dioxide) with organic dyes
mineral
Asphalt Chunk (Bituminous Concrete)
Aggregated Bitumen / Artificial Breccia
sedimentary
Dyed Quartz Geode
Silicon Dioxide (SiO2) with artificial pigment
mineral
Asphalt Concrete
Bituminous Concrete (Anthropic Rock)
sedimentary
Uncertain small metallic-looking mineral/rock fragment
Indeterminate; possibly galena-bearing rock or metallic slag
mineral
Blue Agate Geode Slice
Silicon Dioxide (SiO2) - Chalcedony variety
mineral
Man-made Metal Pin (Non-geological)
Antimony-Lead Alloy or Zinc/Brass Base with Electroplating
Metal Alloy / Manufactured Artifact
Pink Dyed Agate
Chalcedony (SiO2) with artificial dyes
mineral
Blue Dyed Agate
Chalcedony (SiO2) with artificial pigment
mineral
Druzy quartz cluster on matrix
Quartz (SiO₂), likely a drusy coating on a carbonate or other rock matrix
mineral
Druzy amethyst (likely)
Quartz, SiO₂, with purple coloration from trace iron and irradiation
mineral
Druzy quartz specimen
Quartz, SiO₂, with possible iron-oxide staining and minor associated minerals
mineral
Dyed Agate
Chalcedony (SiO2)
Mineral
Iron-stained quartz-rich rock (possibly iron-stained quartzite)
Quartz-rich silicate rock; exact identification is uncertain from the image
metamorphic
Dyed Agate
SiO2
mineral
Concrete with Aggregate
Artificial Conglomerate (Cement and Aggregate)
sedimentary
Dyed howlite (turquoise imitation)
Howlite, Ca₂B₅SiO₉(OH)₅; commonly blue-dyed
mineral
Dyed Agate
Silicon Dioxide (SiO2) - variety Chalcedony
mineral
Blue Agate (Dyed)
Silicon Dioxide (SiO2)
mineral
Dyed Agate Slice
Silicon Dioxide (SiO2) - Chalcedony variety
mineral
Quartz (Citrine or Iron-Stained)
Silicon Dioxide (SiO2)
mineral
Aura Quartz (Titanium/Rainbow Quartz)
SiO2 (Silicon Dioxide) with metallic coating
mineral
Dyed Howlite (Turquenite)
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)
mineral
Dyed Quartz Crystal
Silicon Dioxide (SiO2) with artificial pigment
mineral
Green Quartz (likely Aventurine or Prasiolite)
Silicon Dioxide (SiO2) with inclusions
mineral
Red Tiger's Eye
SiO2 (Silicon Dioxide with iron inclusions)
mineral
Asphalt (Bituminous Rock)
Natural bitumen or Bituminous limestone/sandstone
sedimentary
Dyed Halite
Sodium Chloride (NaCl)
mineral
Dyed pink tumbled stone, possibly howlite or magnesite
Likely dyed Ca₂B₅SiO₉(OH)₅ (howlite) or MgCO₃ (magnesite); the photo is insufficient for confirmation
mineral
Drill Core Sample
Cylindrical Rock Core (Specific mineralogy varies by extraction site)
Metamorphic (Likely Gneiss or Schist based on texture)
Weathered, iron-stained bedrock (rock type uncertain)
Unidentified bedrock; orange-brown staining is likely iron oxides such as goethite and hematite
igneous
Prasiolite (Green Quartz)
Silicon Dioxide (SiO2) with iron impurities
mineral
Druzy Quartz (on Chalcedony/Agate base)
Silicon Dioxide (SiO2)
mineral
Green obsidian (likely molded or heat-treated glass-like specimen)
Volcanic glass; predominantly rhyolitic composition (silica-rich amorphous SiO₂)
igneous