Not a rock, mineral, or geological specimen
Category
Man Made Glass (Often Grouped With Minerals In Lapidary)
Browse man made glass (often grouped with minerals in lapidary) specimens identified by the Rock Identifier community.
Learn about Man Made Glass (Often Grouped With Minerals In Lapidary) in the encyclopedia
View all →Opalite
Synthetic Glass (Hydrated Silica Simulant)
Libyan Desert Glass
Tektite (high-silica impact glass), SiO2
Strawberry Quartz
Silicon Dioxide (SiO2) with Hematite or Goethite inclusions
Concretion with Geode Cavity
Ferruginous Sandstone Concretion with Quartz Center
Opalite (Man-made Glass)
Fused glass (typically made of dolomite and metal opacifiers)
Sea Glass
Man-made vitreous material (silica-based glass)
Blue Goldstone
Synthetic glass with cobalt and copper inclusions
Boxwork or Septarian Concretion
Septarian nodule / Boxwork weathering
Opalite
Synthetic Opalized Glass / Man-made Glass
Opalite
Synthetic Opalized Glass
Opalite (Man-made Glass)
Synthetic Opalised Glass
Asphalt / Road Aggregate
Bituminous Conglomerate (synthetic)
Blue Goldstone
Synthetic Avanturine Glass (or Aventurine Glass)
Ferro-slag (Leland Blue/Slag Glass)
Anthropogenic Vitreous Silica (Industrial Slag)
Concrete
Anthropogenic Sedimentary Rock (Hydrated Calcium Silicate)
Opalite (Synthetic Moonstone/Sea Opal)
Silicon Dioxide (SiO2) glass with metallic inclusions
Opalite
Synthetically produced glass (Silicon Dioxide with metallic inclusions)
Aura Quartz (Pink/Rose Aura Quartz)
Silicon Dioxide (SiO2) bonded with Platinum and/or Silver
Slag Glass (Cullet)
Amorphous Silicon Dioxide (SiO2) with metal oxide colorants
Opalite
Synthetic Opalised Glass
Opalite
Synthetic Opalite Glass
Blue Impression Jasper beads
Impression jasper (microcrystalline quartz/chalcedony), chiefly SiO₂, with iron-oxide and other mineral inclusions
Slag Glass
SiO2 (Silicon Dioxide) with impurities
Green Sea Glass
Man-made silicate glass (weathered)
Slag
Anthropogenic glassy silicate
Bouncy Ball (Synthetic Rubber Polymer)
Polybutadiene / Ethylene Vinyl Acetate (EVA)
Opalite Egg
Synthetic Glass (Simulated Opal)
Metal Chain Belt with Square Plates
Not applicable (man-made)
Mystic Topaz (Treated Quartz or Topaz)
Aluminum silicate fluoride hydroxide [Al2SiO4(F,OH)2] with thin-film metallic coating
Sandstone Concretion
Limonitic Sandstone Concretion
Iron Slag (Industrial Byproduct)
Anthropogenic Vitrification Product/Ferrous Slag
Not a geological specimen
N/A (man-made object)
Opalite (Synthetic Moonstone/Opal)
Synthetic Silica Glass
Sea Glass
Man-made vitreous material
Red Slag Glass
Amorphous Silica (Industrial byproduct with metallic oxide dopants)
Goldstone
Aventurine glass (Synthetic glass with copper inclusions)
Libyan Desert Glass
Libyan Desert Glass (SiO2 with trace elements)
Cherry Quartz with Rose Quartz
Crystalline Quartz (SiO2) with glass-based synthetic components
Goldstone (aventurine glass)
Man-made copper-bearing glass; not a natural mineral (commonly sold as blue/brown goldstone)
Opalite crescent pendant
Opalite (man-made opalescent glass; not a natural mineral)
Asphalt Concrete (Bituminous Conglomerate)
Anthropogenic Bituminous Conglomerate