Corundum (Sapphire variant)
Aluminium oxide (Al2O3)
mineral
Category
Man Made Mineral Simulant (Glass)
Browse man made mineral simulant (glass) specimens identified by the Rock Identifier community.
Learn about Man Made Mineral Simulant (Glass) in the encyclopedia
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Serpentinite
Serpentinite (composed primarily of Serpentine minerals: Mg3Si2O5(OH)4)
metamorphic
Terracotta (Man-made ceramic brick fragment)
Baked clay / High-iron ceramic (Silicate-based ceramic)
Anthropogenic material (Man-made sedimentary mimic)
Pearl
Biogenic CaCO3 (Aragonite and Calcite)
mineral
Precious Coral (Red Coral)
Corallium rubrum (Calcium Carbonate, CaCO3)
mineral
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Serpentine
Serpentinite (group of hydrous magnesium iron phyllosilicate minerals)
metamorphic
Snowflake Obsidian
Volcanic glass with Cristobalite inclusions (70–75% SiO2)
igneous
Colorless faceted gemstone, likely cubic zirconia
Cubic zirconia (synthetic zirconium dioxide, ZrO₂); possibly colorless quartz or laboratory diamond
gemstone
Rough Corundum (Sapphire/Ruby mixture)
Corundum (Aluminum Oxide, Al2O3)
mineral
Diamond (in a jewelry setting)
Diamond (Carbon, C)
mineral
Blue opalite (often sold as synthetic opal)
Opalite glass; amorphous hydrated silica if natural opal (SiO₂·nH₂O)
gemstone
Synthetic Resin (Artificial Specimen)
Polyurethane or Polyester Resin
mineraloid (man-made)
Quartz Pebble (Beach Chalcedony)
Silicon Dioxide (SiO2)
mineral
Chert
Silicon dioxide (SiO2)
Sedimentary
Cubic Zirconia (Diamond Simulant)
Zirconium Dioxide (ZrO2)
mineral
Pink Granite
Phaneritic Felsic Igneous Rock (composed of orthoclase, quartz, and plagioclase)
igneous
Chert / Flint
Microcrystalline Quartz (SiO2)
sedimentary
Aura Quartz / Rainbow Aura Quartz
Silicon Dioxide (SiO2) with metallic vapor coating
mineral
Goldstone (blue-goldstone–style glass) beads
Artificial aventurine glass, typically silica glass with copper inclusions; not a natural mineral
mineral
Tektite
Natural impact glass
meteorite
Green Slag Glass
Amorphous Silica / Glassy Blast Furnace Slag
Mineraloid (Industrial byproduct)
Quartz (Smoky Quartz variant)
Silicon Dioxide (SiO2)
mineral
Jasper Marble
Silicon Dioxide (SiO2) with Impurities
sedimentary
Hematite
Iron(III) oxide (Fe2O3)
mineral
Blue Slag Glass
Ferro-silicate glass (Slag)
igneous (man-made/industrial)
Quartz (likely Chalcedony or Chert)
Silicon Dioxide (SiO2)
mineral
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)
metamorphic
Chalk
Calcium Carbonate (CaCO3)
sedimentary
Goldstone (Red)
Aventurine Glass
Man-made material (Simulated Mineral)
Jade
Jade can refer to two distinct minerals: Nephrite (a variety of the mineral actinolite, Ca2(Mg,Fe)5Si8O22(OH)2) and Jadeite (Na(Al,Fe3+)Si2O6). Based on the image, showing a relatively uniform green color and possibly slight translucence in bead form, it is very likely one of these, but determining which one from a photo is difficult without specific testing.
Mineral/Metamorphic Rock (Nephrite or Jadeite)
Diamond (or Diamond Simulant/Cubic Zirconia)
Carbon (C) - if diamond, or Zirconium dioxide (ZrO2) - if Cubic Zirconia
mineral
Granite
Felsic intrusive igneous rock
igneous
Howlite
Howlite (Calcium borosilicate hydroxide, Ca2B5SiO9(OH)5)
mineral
Smoky Quartz
Smoky Quartz (SiO2)
mineral
Chalcedony (Agate / Jasper Specimen)
Silicon Dioxide (SiO2)
mineral
Obsidian (Black)
Obsidian (High-silica volcanic glass)
igneous
Sandstone (Quartzose)
Arenite (composed primarily of SiO2)
sedimentary
Obsidian
Volcanic Glass (70% or more SiO2)
igneous
Aragonite
Aragonite (Calcium Carbonate - CaCO3)
mineral
Obsidian
Obsidian (Volcanic Glass)
igneous
Diamond (in jewelry setting)
Diamond (C - Carbon)
mineral