Goldstone
Aventurine glass (Synthetic glass with copper inclusions)
mineraloid / man-made glass
Category
Anthropogenic (Man Made Industrial Byproduct)
Browse anthropogenic (man made industrial byproduct) specimens identified by the Rock Identifier community.
Learn about Anthropogenic (Man Made Industrial Byproduct) in the encyclopedia
View all →
Diamond (or Cubic Zirconia simulant)
Carbon (C) - Diamond / Zirconium dioxide (ZrO2) - CZ
mineral
Brick fragment (Man-made material)
N/A (Fired clay)
man-made
Diamond (in a gold ring)
Diamond (pure carbon, C)
mineral
Goldstone (Brown/Gold variety)
Aventurine Glass (SiO2 with Copper inclusions)
Synthetic/Man-made glass (often mistaken for a mineral)
Fluorite (Polished Point/Tower)
Calcium Fluoride (CaF2)
mineral
Blue Goldstone
Goldstone (artificial glass)
Mineral (man-made glass, not natural)
Polished black stone, likely black obsidian
Obsidian (volcanic glass), chiefly silica-rich rhyolitic composition
igneous
Sandstone Anvil / Nutting Stone
Quartzose Sandstone (Sedimentary Rock)
sedimentary
Pink Tumbled Quartz (Dyed)
Silicon Dioxide (SiO2)
mineral
Dyed Crackle Quartz (Green)
Quenching-treated Quartz (Silicon Dioxide, SiO2)
mineral
Chert Concretion (with typical hematite/limonite staining)
Sedimentary Concretion (SiO2 with FeO(OH)⋅nH2O)
sedimentary
Sandstone Concretion
Clastic Sedimentary Rock (primarily SiO2 with mineral cement)
sedimentary
Pyrite Concretion (Grapestone)
Iron Sulfide (FeS2) Concretion
sedimentary
Aura Quartz (Titanium/Gold coated)
Silicon Dioxide (SiO2) with metallic vapor deposition
mineral
Diamond (or Simulant)
Carbon (C) or Cubic Zirconia (ZrO2)
gemstone
Diamond
Carbon (C)
gemstone
Opalite
Synthetic Opalized Glass
mineraloid (man-made)
Opalite
Synthetic Opalite Glass (Silicon Dioxide)
mineraloid (man-made)
Opalite
Synthetic Glass, SiO2 base with metallic inclusions
mineraloid (synthetic)
Polished blue calcite sphere (tentative identification)
Calcite, CaCO₃; blue color generally results from trace impurities or inclusions
mineral
Diamond (or Diamond Simulant)
Carbon (C)
mineral
Black Obsidian
Amorphous volcanic glass (SiO2 + impurities)
igneous
Copper slag or vesicular basalt with copper minerals
Industrial slag / Basaltic matrix with secondary copper minerals
igneous
Synthetic Resin (Artificial Specimen)
Polyurethane or Polyester Resin
mineraloid (man-made)
Conglomerate
Conglomerate Rock (Paraconglomerate)
sedimentary
Sandstone Concretion
Clastic sedimentary rock (primarily Quartz SiO2)
sedimentary
Green Aventurine
Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Synthetic Convention Badge (Plastic/PVC)
Polyvinyl Chloride (PVC) / Polycarbonate
mineraloid (synthetic)
Titanium Amethyst Geode
Silicon Dioxide (SiO2) with Titanium/Metal Vapor Deposition Layer
mineral
Metal Alloy (Likely Pewter or Sterling Silver)
Not a natural geological specimen; composed of refined metals. If pewter, it's a tin-based alloy. If sterling silver, it's 92.5% silver and 7.5% other metals (usually copper).
Man-made material (metal)
Aura Quartz
Titanium/Titanium-Gold treated Silicon Dioxide (SiO2)
mineral
Opalite
Synthetic Opalised Glass
mineraloid (synthetic)
Anthracite Coal with Sulfur staining
Anthracite (Carbon C with impurities)
metamorphic
Blue Goldstone
Man-made glass with suspended copper, cobalt, or manganese particles
man-made glass
Goldstone
Aventurine Glass (Man-made glass with copper inclusions)
mineraloid / man-made glass
Granite with Cupules / Bedrock Mortars
Granite (felsic intrusive plutonic rock)
igneous
Slag Glass
Glassy Silicate Residue
industrial byproduct
Polished blue-green glassy slag or coated mineral fragment
Most likely man-made colored glass/slag; exact composition cannot be determined visually
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Possible tektite or iron-rich slag-like natural specimen
Uncertain; possibly natural glass (tektite) or magnetite-rich rock
mineral
Blue Crackle Quartz (Dyed Quarzite)
Silicon Dioxide (SiO2) with artificial dye
Metamorphic (modified)