Green Slag Glass
Amorphous Silica / Glassy Blast Furnace Slag
Mineraloid (Industrial byproduct)
Category
Antropogenic (Man Made Glass Byproduct)
Browse antropogenic (man made glass byproduct) specimens identified by the Rock Identifier community.
Learn about Antropogenic (Man Made Glass Byproduct) in the encyclopedia
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Opalite
Man-made Glass (Synthetic Opalized Glass)
gemstone
Opalite
Synthetic Opalized Glass / Man-made Glass
gemstone
Milky quartz (likely)
Quartz, silicon dioxide (SiO₂)
mineral
Green Sea Glass
Man-made vitreous material (silica glass)
gemstone
Opalite
Synthetic Glass (typically Silica/Magnesium based with metal additives)
mineral
Tumbled milky quartz
Quartz — silicon dioxide (SiO₂), cryptocrystalline or microcrystalline variety possible
mineral
Carved opalite pendant
Opalite (man-made opalescent glass; not a natural mineral)
gemstone
Blue glassy gemstone-like specimen
Indeterminate; possibly dyed or treated turquoise, blue apatite, or man-made glass
gemstone
Blue Obsidian
Volcanic Glass (Silica, SiO2)
gemstone
Red glassy gemstone, possibly garnet
Unidentified red transparent material; garnet group (X₃Y₂(SiO₄)₃) is a possibility
gemstone
Quartz crystal fragment (likely milky quartz)
Quartz, silicon dioxide (SiO₂)
mineral
Terrazzo (Man-made Composite)
Cementitious or Resin-bound Lithic Composite
sedimentary (artificial)
Sea Glass
Man-made vitreous material / Silicon dioxide
mineral
Opalite
Opalescent Glass (SiO2 + coloring agents)
Mineral (Synthetic/Man-made)
Tumbled milky quartz
Quartz (SiO₂), cryptocrystalline-to-massive variety
mineral
Concrete Fragment
Artificial Conglomerate (Cement and Aggregate)
sedimentary
Blue Diamond
Carbon with Boron impurities (C)
gemstone
Clear Quartz Sphere (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Blue Goldstone
Auraventurine (Synthetic glass with cobalt and copper inclusions)
Synthetic (Man-made Glass)
Blue Goldstone
Man-made glass with crystalline copper/cobalt inclusions
mineral
Diamond (or Simulant)
Carbon (C) or relevant simulant formula (e.g., ZrO2 for Cubic Zirconia)
gemstone
Sea Glass
Man-made vitreous material (silica glass)
sedimentary
Polished opalite (likely man-made opalescent glass)
Opalite is a commercial name, not a mineral; typically opalescent glass, often soda-lime silicate glass
mineral
Opalite
Synthetic Glass / Man-made Opal Simulant
gemstone
Blue Goldstone
Man-made glass with cobalt and metal flecks
man-made glass
Sea Glass
Man-made silicate glass (Amorphous silicon dioxide)
sedimentary
Beads (likely glass or man-made material)
N/A (artificial material)
Man-made material, not a natural rock or mineral specimen
Sea Glass
Amorphous silicon dioxide (man-made glass weathered by nature)
mineral
Opalite
Synthetic Opalised Glass
mineral
Opalite-style glass pendant
Man-made opalescent glass (not natural opal)
mineral
Opalite
Synthetic Opalized Glass
gemstone
Goldstone
Man-made glass infused with metallic copper
gemstone
Sea Glass
Man-made silicate glass weathering product
sedimentary
Blue Goldstone
Aventurine Glass
man-made glass
Opalite
Man-made glass (traditionally simulated Opal)
mineral
Opalite (a synthetic glass)
Silicon Dioxide (SiO2) with various additives; not a true mineral but a man-made gem simulant
Mineral Simulant (Synthetic Glass)
Sea Glass
Man-made vitreous material (silica-based glass)
mineral
Not a geological specimen
N/A (man-made object)
N/A
Tumbled milky quartz pebble
Quartz (silicon dioxide, SiO₂), opaque-to-translucent milky variety
mineral
Likely tumbled red mineral or glass imitation
Indeterminate; possibilities include red jasper (microcrystalline quartz, SiO₂) or dyed chalcedony
mineral
Green Quartz / Chrysoprase / Sea Glass
Silicon Dioxide (SiO2)
mineral