Pearl (Biogenic Mineraloid)
Calcium carbonate (Aragonite) and Conchiolin, CaCO3
mineral
Category
Mineralogical Simulant
Browse mineralogical simulant specimens identified by the Rock Identifier community.
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Faceted Gemstone
Unknown transparent mineral, possibly Diamond (C), Cubic Zirconia (ZrO2), Quartz (SiO2), or Glass
gemstone
Amber
Succinite (Organic Mineraloid)
mineral
Opalite
Synthetic Opalized Glass / Man-made Glass
gemstone
Black Pearl (Tahitian Pearl)
Aragonite / Calcite (CaCO3) with Conchiolin
mineral
Gemstone Ring
Various (Likely Glass, Cubic Zirconia, or assorted semi-precious stones)
gemstone
Abalone Shell (Nacre)
Aragonite (CaCO3) - Biogenic Mineral
mineral
Pearl
Calcium Carbonate (Aragonite) with Conchiolin; formula: CaCO3
mineral
Anthracite Coal
Anthracite (Carbon-rich mineraloid)
metamorphic
Amber
Succinite (Organic Mineraloid) - C10H16O
mineral
Pearl
Aragonite / Calcium Carbonate (CaCO3)
mineral
Opalite
Man-made glass (traditionally simulated Opal)
mineral
Pearl
Organic Mineraloid (CaCO3 + Conchiolin)
mineral
Pearl
Calcium Carbonate (Aragonite/Calcite mixed with Conchiolin), CaCO3
mineral
Green Opal
Hydrated Silica (SiO2·nH2O)
mineraloid
Gold and Cubic Zirconia (San Judas Tadeo Pendant)
Native Gold (Au) with Synthetic Cubic Zirconia (ZrO2)
mineral
Amber
Succinite (organic mineraloid); Chemical formula: C10H16O
mineral
Opalite
Synthetic Opalite Glass / Opalized Glass
gemstone
Pearl (Biogenic Mineral)
Calcium Carbonate (primarily Aragonite) with Conchiolin; CaCO3
mineral
Shungite
Shungite (carbon-rich Precambrian mineraloid)
mineral
Red Dyed Howlite
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)
mineral
Shungite
Carbon-rich mineraloid (Amorphous carbon)
mineral
Opalite Egg
Synthetic Glass (Simulated Opal)
mineral
Tumbled Mixed Gemstones and Rocks
Various mineral species including quartz (SiO2) and silicate minerals
mineral
Dragon's Breath (Mexican Opal Glass)
Artisan Foil Glass (SiO2 based)
mineraloid
Citrine (Heat-Treated Amethyst)
Silicon Dioxide (SiO2)
mineral
Opalite
Man-made opalescent glass
gemstone
Dyed Howlite (often sold as 'Turquenite')
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)
mineral
Opalite
Synthetic Glass (SiO2 + impurities)
mineral
Opalite
Man-made Glass (Synthetic Opalized Glass)
gemstone
Opalite
Synthetic Opalised Glass
mineral
Precious Opal
Hydrated Silica (SiO2·nH2O)
mineral
Limonite/Ironstone
Limonite (FeO(OH)·nH2O)
mineral
Gemstone Tree Brooch (Agate and Quartz)
Silicon Dioxide (SiO2)
mineral
Fursuit (Synthetic Fur Specimen)
Canis anthropomorphus syntheticus
Anthropomorphic Textile Construct
Amber with Inclusion
Succiniferous fossil resin (C10H16O)
mineraloid
Opalite
Synthetic Opalite Glass
mineraloid (man-made)
Dyed Crackle Quartz (Green)
Quenching-treated Quartz (Silicon Dioxide, SiO2)
mineral
Tumbled Mixed Gemstones (Quartz and Rutile)
Silicon Dioxide (SiO2) with various inclusions
mineral
Opal (in Jewelry Setting)
Hydrated Silicon Dioxide (SiO2·nH2O)
gemstone
Opal
Hydrated Amorphous Silica (SiO2·nH2O)
Mineral
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
mineral