Blue Goldstone
Goldstone (artificial glass)
Mineral (man-made glass, not natural)
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
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Basalt with Caliche Crust
Aphanitic Mafic Igneous Rock with Calcium Carbonate (CaCO3) coating
igneous
Dyed Quartz Geode
Silicon Dioxide (SiO2) with artificial pigment
mineral
Pet Rock (Quartzite/Sandstone River Rock)
Silicon Dioxide (SiO2) mixture
sedimentary
Crystal cave / solution cave
Karst cave containing speleothems, chiefly calcite (CaCO₃) and sometimes aragonite; likely a stock image rather than an individual specimen
sedimentary
Worry Stone
Weathered Quartzite or Sandstone
sedimentary
Dyed Agate
SiO2
Mineral
Dyed Agate
Chalcedony (SiO2)
mineral
Dyed Agate
Agate (Silicon dioxide)
Mineral
Asphalt Concrete
Bituminous Concrete (Anthropic Rock)
sedimentary
Man-made Metal Pin (Non-geological)
Antimony-Lead Alloy or Zinc/Brass Base with Electroplating
Metal Alloy / Manufactured Artifact
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
Purple Agate (Dyed Chalcedony)
SiO2 (Silicon Dioxide) with organic dyes
mineral
Dyed Agate
Chalcedony (SiO2)
Mineral
Dyed Quartz Geode
Silicon Dioxide (SiO2) with artificial pigment
mineral
Dyed howlite (turquoise imitation)
Howlite, Ca₂B₅SiO₉(OH)₅; commonly blue-dyed
mineral
Aura Quartz (Titanium/Rainbow Quartz)
SiO2 (Silicon Dioxide) with metallic coating
mineral
Blue Agate (Dyed Chalcedony)
Silicon Dioxide (SiO2)
mineral
Dyed Agate
Silicon Dioxide (SiO2)
mineral
Blue Dyed Agate
Chalcedony (Silicon Dioxide, SiO2)
mineral
Dyed Agate Slice
Silicon Dioxide (SiO2) - Chalcedony variety
mineral
Druzy Quartz (on Chalcedony/Agate base)
Silicon Dioxide (SiO2)
mineral
Blue Agate (Dyed)
Silicon Dioxide (SiO2)
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
Polished white/gray stone, possibly quartz or marble
Indeterminate; likely quartz (SiO₂) or calcite-rich marble (CaCO₃)
mineral
Asphalt (Bituminous Rock)
Natural bitumen or Bituminous limestone/sandstone
sedimentary
Blue-dyed Quartz Druzy
Silicon Dioxide (SiO2) with artificial pigment
mineral
Prasiolite (Green Quartz)
Silicon Dioxide (SiO2) with iron impurities
mineral
Quartz (Citrine or Iron-Stained)
Silicon Dioxide (SiO2)
mineral
Green agate/geode slab
Cryptocrystalline quartz (chalcedony), SiO₂, likely agate with druzy quartz
mineral
Dyed Agate
Silicon Dioxide (SiO2) - variety Chalcedony
mineral
Asphalt Chunk (Bituminous Concrete)
Aggregated Bitumen / Artificial Breccia
sedimentary
Drill Core Sample
Cylindrical Rock Core (Specific mineralogy varies by extraction site)
Metamorphic (Likely Gneiss or Schist based on texture)
Pink Dyed Agate
Chalcedony (SiO2) with artificial dyes
mineral
Blue Dyed Agate
Chalcedony (SiO2) with artificial pigment
mineral
Quartz (Tumbled)
SiO2 (Silicon Dioxide)
mineral
Concrete with Aggregate
Artificial Conglomerate (Cement and Aggregate)
sedimentary
Quartz Druzy on Matrix
Silicon Dioxide (SiO2)
mineral