Dyed Crackle Quartz (Green)
Quenching-treated Quartz (Silicon Dioxide, SiO2)
mineral
Category
Anthropogenic Sedimentary (Man Made)
Browse anthropogenic sedimentary (man made) specimens identified by the Rock Identifier community.
Learn about Anthropogenic Sedimentary (Man Made) in the encyclopedia
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Aura Quartz (Titanium/Gold coated)
Silicon Dioxide (SiO2) with metallic vapor deposition
mineral
Slag Glass
SiO2 (Silicon Dioxide) with impurities
man-made glass
Opalite
Synthetic Glass, SiO2 base with metallic inclusions
mineraloid (synthetic)
Chert (specifically a Lithic Flake)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
sedimentary
Chert (Arrowhead/Projectile Point)
Microcrystalline quartz (SiO2)
sedimentary
Cubic Zirconia (Simulated Diamond)
Cubic Zirconia (ZrO2)
mineral
Opalite
Synthetic Opalized Glass
mineraloid (man-made)
Hematite Beads
Hematite (Fe2O3)
Mineral
Chert (Arrowhead artifact)
Chert (Cryptocrystalline Silica, SiO2)
sedimentary
Chert (Arrowhead Artifact)
Microcrystalline Quartz (SiO2)
sedimentary
Chert Arrowhead (Lithic Artifact)
Microcrystalline Quartz (SiO2)
sedimentary
Chert Arrowhead (Lithic Artifact)
Chert (Cryptocrystalline Quartz, SiO2)
sedimentary
Black Obsidian
Amorphous volcanic glass (SiO2 + impurities)
igneous
Nutting Stone / Cupstone (Sandstone or Quartzite)
Sedimentary rock with anthropogenic modification (cupule)
sedimentary
Chert Arrowhead
Microcrystalline Quartz (SiO2)
sedimentary
Man-made earbud charging case (Not a rock or mineral)
Acrylonitrile Butadiene Styrene (ABS) Plastic with electronic components
Synthetic/Man-made object
Chert (Arrowhead Fragment)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Arrowheads)
Microcrystalline Quartz (SiO2)
sedimentary
Green Aventurine
Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Chert Arrowhead
Microcrystalline Quartz (SiO2)
sedimentary
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)
Chert (Yellow Jasper)
Cryptocrystalline Quartz (SiO2)
sedimentary
Opalite
Synthetic Opalised Glass
mineraloid (synthetic)
Carborundum (Silicon Carbide)
Silicon Carbide (SiC)
mineral (synthetic)
Aura Quartz
Titanium/Titanium-Gold treated Silicon Dioxide (SiO2)
mineral
Red Slag Glass
Amorphous Silica (Industrial byproduct with metallic oxide dopants)
Mineraloid / Industrial Byproduct
Asphalt (Bituminous Pavement Bit)
Bitumen-bound aggregate (Petrochemical-bound composite)
sedimentary (anthropogenic/technogenic)
Granite with Cupules / Bedrock Mortars
Granite (felsic intrusive plutonic rock)
igneous
Goldstone
Aventurine Glass (Man-made glass with copper inclusions)
mineraloid / man-made glass
Chert (Arrowhead or Flake)
Microcrystalline quartz (SiO2)
sedimentary
Blue Goldstone
Man-made glass with suspended copper, cobalt, or manganese particles
man-made glass
Green Glass (often marketed as 'Obsidian' or 'Green Quartz')
Amorphous Silica (SiO2) with copper or chromium additives
Mineraloid (Man-made)
Cullet Glass (sometimes mistaken for Blue Obsidian or Slag)
Amorphous Silicon Dioxide (SiO2) with chemical additives (e.g., Cobalt for blue color)
mineraloid / industrial byproduct
Painted River Rock
Anthropogenic-modified Siliciclastic Sedimentary Rock
Sedimentary
Chert Arrowhead
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Arrowhead)
Microcrystalline Quartz (SiO2)
sedimentary
Chert Arrowhead (Projectile Point)
Microcrystalline Quartz (SiO2)
sedimentary
Chert Arrowhead
Microcrystalline Quartz (SiO2)
sedimentary
Blue Crackle Quartz (Dyed Quarzite)
Silicon Dioxide (SiO2) with artificial dye
Metamorphic (modified)
Dyed Blue Agate (Dragon Vein Agate)
Silicon Dioxide (SiO2) with artificial cobalt/organic dyes
mineral