Goldstone (Brown/Gold variety)
Aventurine Glass (SiO2 with Copper inclusions)
Synthetic/Man-made glass (often mistaken for a mineral)
Category
Sedimentary (Man Made Conglomerate)
Browse sedimentary (man made conglomerate) specimens identified by the Rock Identifier community.
Learn about Sedimentary (Man Made Conglomerate) in the encyclopedia
View all →
Blue Goldstone
Goldstone (artificial glass)
Mineral (man-made glass, not natural)
Fluorite (Polished Point/Tower)
Calcium Fluoride (CaF2)
mineral
Polished black stone, likely black obsidian
Obsidian (volcanic glass), chiefly silica-rich rhyolitic composition
igneous
Quartzite (Engineered Stone)
Silicon Dioxide (SiO2) based synthetic composite
metamorphic
Pink Tumbled Quartz (Dyed)
Silicon Dioxide (SiO2)
mineral
Dyed Crackle Quartz (Green)
Quenching-treated Quartz (Silicon Dioxide, SiO2)
mineral
Aura Quartz (Titanium/Gold coated)
Silicon Dioxide (SiO2) with metallic vapor deposition
mineral
Iron Slag
Iron/Steel Slag (Ferrosilicate Glass)
industrial byproduct (anthropogenic material)
Iron Slag (Industrial Byproduct)
Anthropogenic Vitrification Product/Ferrous Slag
Mineral-like Industrial Smelting Waste
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Slag Glass
SiO2 (Silicon Dioxide) with impurities
man-made glass
Opalite
Synthetic Glass, SiO2 base with metallic inclusions
mineraloid (synthetic)
Cubic Zirconia (Simulated Diamond)
Cubic Zirconia (ZrO2)
mineral
Opalite
Synthetic Opalized Glass
mineraloid (man-made)
Blue Glass or Slag Glass
Amorphous Silica (Anthropogenic Glass)
mineral
Hematite Beads
Hematite (Fe2O3)
Mineral
Black Obsidian
Amorphous volcanic glass (SiO2 + impurities)
igneous
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Man-made earbud charging case (Not a rock or mineral)
Acrylonitrile Butadiene Styrene (ABS) Plastic with electronic components
Synthetic/Man-made object
Green Aventurine
Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Slag
Ferrous Slag (Amorphous calcium-magnesium-aluminum silicates)
igneous (artificial/anthropogenic)
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)
Opalite
Synthetic Opalised Glass
mineraloid (synthetic)
Carborundum (Silicon Carbide)
Silicon Carbide (SiC)
mineral (synthetic)
Metaconglomerate
Metaconglomerate (Quartzite conglomerate)
metamorphic
Slag (Industrial Glass/Glassy Rock)
Anthropogenic Vitreous Material
igneous
Aura Quartz
Titanium/Titanium-Gold treated Silicon Dioxide (SiO2)
mineral
Sea Glass (White/Clear)
Amorphous Silica (Alkali-Lime-Silica Glass), SiO2 + Na2O + CaO
Anthropogenic (Man-made product subject to geological processes)
Red Slag Glass
Amorphous Silica (Industrial byproduct with metallic oxide dopants)
Mineraloid / Industrial Byproduct
Quartz Pebble
Silicon dioxide (SiO2)
sedimentary
Granite with Cupules / Bedrock Mortars
Granite (felsic intrusive plutonic rock)
igneous
Goldstone
Aventurine Glass (Man-made glass with copper inclusions)
mineraloid / man-made glass
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)
Gravel / Small Pebble
Rock Fragment (Gravel)
sedimentary
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
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Quartzite Conglomerate
Conglomerate (SiO2 rich)
sedimentary
Puddingstone (Jasper Conglomerate)
Conglomerate (specific type: Jasper Conglomerate or Hertfordshire Puddingstone)
Sedimentary
Blue Crackle Quartz (Dyed Quarzite)
Silicon Dioxide (SiO2) with artificial dye
Metamorphic (modified)