Opalite
Synthetic Opalized Glass / Man-made Glass
gemstone
Category
Anthropogenic Material (Man Made Rock)
Browse anthropogenic material (man made rock) specimens identified by the Rock Identifier community.
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Opalite
Synthetic Glass / Man-made Opal Simulant
gemstone
Opalite
Man-made Glass (Synthetic Opalized Glass)
gemstone
Opalite (Man-made Glass)
Synthetic Opalised Glass
mineral
Sandstone
Sedimentary Rock (Quartz Sandstone)
sedimentary
Sandstone
Arenite (SiO2 based clastic rock)
sedimentary
Carved Stone Turtle
Carved Soapstone and Quartz
mineral
Banded Chert (River Stone)
Silicon Dioxide (SiO2)
sedimentary
Blue Goldstone
Aventurine Glass
Man-made glass (often grouped with minerals in lapidary)
Strawberry Quartz
Silicon Dioxide (SiO2) with Hematite/Goethite inclusions
mineral
Slag (Industrial Glass/Metal)
Ferrous slag or Glassy silicate byproduct
Antropogenic rock (Man-made)
Chert (Chert / Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chalk
Calcium carbonate (CaCO3)
sedimentary
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Coquina (Fossiliferous Limestone)
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Opalite
Synthetic Glass (Simulated Moonstone/Opal)
gemstone
Diamond (or Cubic Zirconia)
Carbon (C) or Zirconium Dioxide (ZrO2)
mineral
Sandstone
Arenite (SiO2 primarily)
sedimentary
Sandstone
Arenite (specifically sublithic or quartz arenite)
sedimentary
Beach Pebble (Chalcedony / Chert)
Silicon Dioxide (SiO2)
mineral
Pink Granite
Phaneritic Felsic Igneous Rock (composed of orthoclase, quartz, and plagioclase)
igneous
Nephrite Jade
Nephrite
Mineral/Rock
Sandstone
Arenite (SiO2 primarily)
sedimentary
Goldstone (Brown/Gold variety)
Aventurine Glass (SiO2 with Copper inclusions)
Synthetic/Man-made glass (often mistaken for a mineral)
Opalite
Synthetic Opalized Glass
mineraloid (man-made)
Chert (Arrowhead/Projectile Point)
Microcrystalline quartz (SiO2)
sedimentary
Concrete or asphalt-like aggregate surface with a dark fragment
Uncertain; likely artificial concrete containing mixed lithic aggregate, not a natural rock
sedimentary
Jewelry Chain with Blue and Clear Gemstones (Likely Cubic Zirconia)
Cubic Zirconia (ZrO₂), Silver or White Gold/Platinum Alloy
Mineral (synthetic) and Metal (precious/base)
Chert (Black Flint)
Silicon Dioxide (SiO2)
sedimentary
Opalite
Man-made opalescent glass (SiO2 + metal oxides)
mineral (synthetic)
Cullet Glass (Man-made Glass Slag)
Amorphous Silica (SiO2) with chemical additives
Mineraloid
Fluorite (Polished Point/Tower)
Calcium Fluoride (CaF2)
mineral
Red Sandstone
Quartz Arenite (iron-stained) / SiO2
sedimentary
Chert (Flint / Jasper)
Silicon Dioxide (SiO2)
sedimentary
Pink Tumbled Quartz (Dyed)
Silicon Dioxide (SiO2)
mineral
Dyed Crackle Quartz (Green)
Quenching-treated Quartz (Silicon Dioxide, SiO2)
mineral
Pyrite Concretion (Grapestone)
Iron Sulfide (FeS2) Concretion
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Chert (Flint)
SiO2 (Microcrystalline Quartz)
sedimentary
Sandstone
Arenite (variable SiO2 composition)
sedimentary