Silicon Carbide (Carborundum)
Silicon Carbide (SiC)
mineral
Category
Man Made Byproduct (Non Geological)
Browse man made byproduct (non geological) specimens identified by the Rock Identifier community.
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Red Sandstone or Brick Fragment
Arenite (if sandstone)
sedimentary
Titanium Coated Kyanite (Aura Kyanite)
Aluminosilicate (Al2SiO5) with a Titanium-Niobium vacuum-deposited coating
metamorphic
Polished labradorite sphere
Labradorite, calcic plagioclase feldspar ((Ca,Na)(Al,Si)₄O₈)
mineral
Polished labradorite pendant
Labradorite, a calcium-rich plagioclase feldspar (approximately NaAlSi₃O₈–CaAl₂Si₂O₈)
mineral
Citrine Quartz
Citrine (Silicon Dioxide, SiO2)
mineral
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
mineral
Faceted gemstone in a jewelry setting
Indeterminate from image; likely quartz, cubic zirconia, or another transparent faceted stone
gemstone
Cherry Quartz
SiO2 (Silicon Dioxide with iron-rich inclusions/dye)
mineral
Aventurine Quartz
Silicon Dioxide (SiO2) with Fuchsite inclusions
metamorphic
Strawberry Quartz
Silicon Dioxide (SiO2) with Hematite or Goethite inclusions
mineral
Green glassy mineral fragment, possibly fluorite
Fluorite (calcium fluoride, CaF₂), tentative identification
mineral
Opalite
Man-made opalescent glass (SiO2 + metal oxides)
mineral (synthetic)
Goldstone (Brown/Gold)
Aventurine Glass (Man-made glass with Copper inclusions)
gemstone
Porcelain Tile (Sandstone-look)
Man-made Ceramic (resembling Quartz-rich Sandstone)
sedimentary (imitation)
Sea Glass
Man-made silicate glass (Amorphous silicon dioxide)
mineral
Goldstone
Aventurine Glass (Man-made glass with copper inclusions)
mineraloid / man-made glass
Blue cabochon gemstone, likely synthetic glass or dyed stone
Indeterminate from image; possible glass, synthetic spinel, sodalite, or lapis lazuli
gemstone
Bismuth
Bismuth (Bi)
mineral
Iron Slag
Anthropogenic Ferro-silicate
mineral
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Cubic Zirconia (Man-made)
Cubic Zirconia (ZrO2) with Enamel and Metal Alloy
mineral
Cubic Zirconia (Diamond Simulant)
Zirconium Dioxide (ZrO2)
gemstone
Opalite
Synthetic Opalised Glass
mineral
Rainbow Hematite (Titanium Coated)
Iron(III) oxide (Fe2O3) with Titanium/Metal Oxide coating
mineral
Sandstone (with man-made markings)
Arenite (composed primarily of Quartz, SiO2)
sedimentary
Chert Concretion
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Boxwork or Septarian Concretion
Septarian nodule / Boxwork weathering
sedimentary
Tumbled milky quartz pebble
Quartz (silicon dioxide, SiO₂), likely milky quartz
mineral
Clear quartz sphere
Quartz (silicon dioxide, SiO₂)
mineral
Slag (Industrial Glass/Metal Waste)
Artificial silicate/ferro-silicate byproduct
Mineraloid (Industrial byproduct)
Sandstone (with concrete/human-made layer)
Clastic Sedimentary Rock (primarily Quartz/Feldspar grains)
sedimentary
Mystic Topaz
Aluminum Silicate Fluoride Hydroxide (Al2SiO4(F,OH)2) with metallic film coating
mineral
Industrial Slag
Anthropogenic Vitreous Slag
igneous
Obsidian
Volcanic Glass (SiO2)
igneous
Concrete
Anthropogenic Sedimentary Rock (Hydrated Calcium Silicate)
sedimentary (anthropogenic / man-made)
Obsidian (Blue)
Volcanic Glass (SiO2)
igneous
Blue Cracked Quartz (Dyed Fire Crackle Quartz)
Silicon Dioxide (SiO2) with synthetic dye
mineral
Red glassy cabochon, likely synthetic ruby or red glass
Uncertain; possible synthetic corundum (Al₂O₃, chromium-colored) or man-made glass
gemstone
N/A - Man-made object (Jewelry Chain)
Antiqued or Oxidized Metal Chain (often Steel or Brass)
Mineral (processed metal)
Hematite Beads
Hematite (Fe2O3)
Mineral
Tumbled milky quartz pebble
Quartz (silicon dioxide, SiO₂)
mineral