Green Quartz / Chrysoprase / Sea Glass
Silicon Dioxide (SiO2)
mineral
Category
Mineral (Man Enhanced)
Browse mineral (man enhanced) specimens identified by the Rock Identifier community.
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Diamond
Carbon (C)
gemstone
Dyed mineral cluster, likely calcite or aragonite
Calcite (CaCO₃) or aragonite (CaCO₃), artificially color-enhanced
mineral
Opalite
Synthetic Glass (Simulated Opal)
gemstone
Asphalt / Road Aggregate
Bituminous Conglomerate (synthetic)
sedimentary
Cherry Quartz with Rose Quartz
Crystalline Quartz (SiO2) with glass-based synthetic components
gemstone
Purple Agate (Dyed Chalcedony)
SiO2 (Silicon Dioxide) with organic dyes
mineral
Sea Glass
Silicon dioxide (mostly)
mineral
Blue Goldstone
Aventurine Glass
man-made glass
Citrine Quartz Cluster
Silicon Dioxide (SiO2)
mineral
Spessartine Garnet
Manganese aluminum silicate (Mn2+3Al2(SiO4)3)
mineral
Diamond (in a jewelry setting)
Carbon (C)
mineral
Titanium-Coated Hematite (Aura Hematite)
Titanium-bonded Hematite (Fe2O3 with a Ti coating)
mineral
Polished pink chalcedony (likely pink agate/geode)
Microcrystalline quartz, SiO₂; chalcedony with iron-bearing inclusions and possible druzy quartz
mineral
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Blue Agate (Dyed or Treated Chalcedony)
Silicon Dioxide (SiO2), microcrystalline quartz variety
mineral
Quartz pebble (Quartztite fragment)
Silicon Dioxide (SiO2)
mineral
Polished breccia-like rock specimen
Likely polymictic breccia or brecciated jasper, with quartz-rich fragments
rock
Slag Glass
Vitreous Silicate Residue
industrial byproduct (anthropogenic rock)
Chevron Amethyst
Silicon Dioxide (Quartz variety) - SiO2
mineral
Opalite
Synthetic Opalized Glass
gemstone
Metal Chain Belt with Square Plates
Not applicable (man-made)
Man-made Object (Metalwork)
Corundum (Sapphire/Ruby in Matrix)
Corundum (Al2O3)
mineral
Aura Quartz (Titanium Quartz)
Titanium-coated Silicon Dioxide (SiO2 + Ti)
mineral
Concrete Fragment
Hardened Portland cement and mineral aggregate
sedimentary (anthropogenic)
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Green Chalcedony (Batu Akik)
Silicon Dioxide (SiO2)
gemstone
Black Obsidian
Obsidian (Volcanic Glass, SiO2 + impurities)
igneous
Blue Agate (Dyed)
Silicon Dioxide (SiO2) - Variety of Chalcedony
mineral
Blue Dyed Quartzite
Silicon Dioxide (SiO2) with artificial pigment
metamorphic
Asphalt (Bituminous Concrete)
Bituminous mix containing aggregates and petroleum-based binder (CnH2n+2)
not a rock (anthropogenic material/technofossil)
Dyed Agate Slice
Microcrystalline Quartz (SiO2) with artificial pigment
mineral
Cobalt Blue Glass / Cullet Glass
Silicon dioxide (Amorphous man-made glass)
mineral
Peacock ore (iridescent chalcopyrite, possibly bornite)
Chalcopyrite, CuFeS₂; the iridescent surface may be natural tarnish or artificial acid treatment. Similar material is bornite, Cu₅FeS₄.
mineral
Blue Agate (Dyed Chalcedony)
Silicon Dioxide (SiO2)
mineral
Aura Quartz (specifically Titanium Aura Quartz)
Titanium-coated Silicon Dioxide (SiO2 + Ti Coating)
mineral
Bornite
Bornite (Cu5FeS4)
mineral
Carnelian
Carnelian (a variety of Chalcedony, which is a microcrystalline quartz, SiO2)
Mineral (variety of Chalcedony)
Tumbled quartz-rich agate/geode fragment
Microcrystalline quartz (SiO₂), likely chalcedony with crystalline quartz and possible iron-oxide inclusions
mineral
Carnelian (Agate)
SiO2 (Silicon Dioxide with Iron Oxide impurities)
mineral
Carnelian Agate
Carnelian (Silicon Dioxide: SiO2) with iron oxide impurities
mineral
Opalite
Synthetic Opalite Glass / Opalized Glass
gemstone