Bismuth Crystal
Bismuth (Bi)
mineral
Category
Mineral (Man Modified)
Browse mineral (man modified) specimens identified by the Rock Identifier community.
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Aura Rose Quartz
SiO2 (Silicon Dioxide with Titanium/Gold coating)
mineral
Tumbled quartz pebble
Quartz, silicon dioxide (SiO₂), likely milky quartz
mineral
Goldstone
Aventurine glass
mineral (man-made glass)
Concrete
Hydrated Portland Cement Aggregate Composite
Anthropogenic Sedimentary (Man-made)
Concretion
Sedimentary Concretion (Ironstone / Calcite Concretion)
sedimentary
Moldavite
Tektite (Impact Glass), ~80% SiO2 + Al2O3
tektite
Quartz crystal (likely clear quartz)
Quartz, silicon dioxide (SiO₂)
mineral
Ferrochrome Slag
Anthropogenic slag (Fe-Cr alloy waste)
industrial byproduct
Turquoise (likely stabilized or simulated Howlite)
CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)
mineral
Blue Glass or Slag Glass
Amorphous Silica (Anthropogenic Glass)
mineral
Tumbled milky quartz (likely)
Quartz, silicon dioxide (SiO₂)
mineral
Clear quartz fragment
Quartz (silicon dioxide, SiO₂)
mineral
Grey Chalcedony
Silicon Dioxide (SiO2)
mineral
Diamond (as featured in jewelry)
Diamond (C - pure carbon)
mineral
Slag (Industrial Byproduct)
Artificial silicate/iron byproduct
Mineral description (Anthropogenic material)
Opalite
Synthetic Opalized Glass (SiO2 + additives)
mineraloid (man-made)
Concrete with Aggregate
Composite construction material; primary matrix is Calcium Silicate Hydrate (C-S-H)
anthropogenic (human-made) sedimentary-like material
Goldstone (Red)
Aventurine Glass (Cupriferous glass)
Synthetic Glass (Man-made)
Ocean Jasper Mushroom
Orbicular Jasper (Silicon Dioxide, SiO2 mixed with various impurities)
mineral
Opalite
Synthetic Opalized Glass / Man-made Glass
gemstone
Opalite (Man-made Glass)
Synthetic Opalised Glass
mineral
Opalite
Opalescent Glass (SiO2 + coloring agents)
Mineral (Synthetic/Man-made)
Cullet Glass (Slag Glass)
Amorphous Silicon Dioxide (Industrial byproduct)
mineraloid
Opalite
Synthetic Opalised Glass
mineral
Dyed Agate
Chalcedony (SiO2)
mineral
Cullet Glass (Slag)
Amorphous Silicon Dioxide (Man-made)
Mineraloid
Opalite
Synthetic Glass (Hydrated Silica Simulant)
mineral
Titanium Aura Quartz (Bismuth-coated Druzy)
Silicon Dioxide (SiO2) with Titanium/Metal vapor coating
mineral
Aura Quartz (Rainbow Quartz)
Silicon Dioxide (SiO2) with metallic vapor coatings
mineral
Sandstone Concretion
Clastic Sedimentary Concretion (typically Quartz/Silica with Iron Oxide)
sedimentary
Ruby in Matrix
Corundum (Al2O3)
mineral
Opalite
Synthetic Glass / Man-made Opal Simulant
gemstone
Libyan Desert Glass
Tektite (high-silica impact glass), SiO2
mineral
Bouncy Ball (Synthetic Rubber Polymer)
Polybutadiene / Ethylene Vinyl Acetate (EVA)
Synthetic material (Not a rock or mineral)
Pyrite in Quartz (Drill Core)
Silicon Dioxide (SiO2) with Iron Sulfide (FeS2) inclusions
igneous/metamorphic (hydrothermal)
Green obsidian (likely molded or heat-treated glass-like specimen)
Volcanic glass; predominantly rhyolitic composition (silica-rich amorphous SiO₂)
igneous
Opalite glass sphere (likely synthetic imitation)
Man-made opalescent glass; not natural opal
mineral
Goldstone
Avventurina (Man-made Glass with Copper inclusions)
mineral
Opalite
Man-made glass (traditionally simulated Opal)
mineral
Tumbled milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Tumbled clear quartz (rock crystal)
Quartz, silicon dioxide (SiO₂)
mineral