Snowflake Obsidian
Volcanic Glass with Cristobalite inclusions
Category
Browse mineral (man made glass, not natural) specimens identified by the Rock Identifier community.
Snowflake Obsidian
Volcanic Glass with Cristobalite inclusions
Orange Quartz with Hematite inclusions
Quartz (SiO2) with Hematite (Fe2O3) inclusions
Alexandrite
Chrysoberyl (BeAl2O4)
Blue Topaz (specifically London Blue or Swiss Blue based on color saturation)
Al2SiO4(F,OH)2 (Aluminum Silicate Fluoride Hydroxide)
Black Tourmaline
Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)
Onyx (Black Onyx)
Silicon Dioxide (SiO2)
Quartz with Muscovite Mica
SiO2 with KAl2(AlSi3O10)(OH)2
Turquoise (Dyed Howlite or Magnesite imitation)
Hydrated phosphate of copper and aluminum / CuAl6(PO4)4(OH)8·4H2O
Shale or Slaty Mudstone
Argillaceous sedimentary rock
Snowflake Obsidian
Spherulitic Obsidian (primarily SiO2 with Cristobalite inclusions)
Diamond
Diamond (pure carbon, C)
Turquoise (Rough Specimens)
Hydrous phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O
Ruby
Corundum (Al2O3 with Chromium traces)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Turquoise
CuAl6(PO4)4(OH)8·4H2O (Hydrated copper and aluminium phosphate)
Turquoise (Tumbled/Polished)
Hydrated phosphate of copper and aluminium, CuAl6(PO4)4(OH)8·4H2O
Amethyst
Amethyst (Silicon Dioxide, SiO2)
Star Ruby
Corundum (Al2O3 with chromium and rutile inclusions)
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
Jade (Nephrite or Jadeite)
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (Na(Al,Fe3+)Si2O6)
River Jasper (Green Jasper)
Silicon Dioxide (SiO2) with impurities
Pink Banded Agate (Dyed)
Chalcedony (cryptocrystalline silica), chemical formula SiO2
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Blue Sapphire (Ceylon)
Corundum (Al2O3) with traces of Iron and Titanium
Sulfur
Sulfur (S8)
Shale (with Iron Oxide staining)
Fissile Mudstone (primarily Quartz and Clay minerals)
Banded Gneiss
Gneiss (typically quartz, feldspar, mica, amphibole composition)
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
Black Tourmaline (Schorl)
Sodium Iron Aluminum Borosilicate (NaFe2+3Al6(Si6O18)(BO3)3(OH)3OH)
Sodium Polyacrylate (Superabsorbent Polymer)
Sodium Polyacrylate [-CH2-CH(COONa)-]n
Amethyst
Amethyst (SiO2 with Iron impurities)
Amethyst Geode
Amethyst (Silicon Dioxide), Formula: SiO2
Gold Nugget
Native Gold (Au)
Ruby
Corundum (Al2O3 with Chromium impurities)
Carnelian
Cryptocrystalline Quartz (SiO2 with iron oxide impurities)
Amethyst (Tumbled)
Amethyst (Silicon Dioxide with Iron impurities) - SiO2
Red Coral (with Hematite and Black Pearl accents)
Corallium rubrum (Calcium Carbonate, CaCO3)
Pink Sapphire
Corundum (Al2O3 with Chromium/Titanium/Iron traces)
Gold Nugget
Native Gold (Au)
Chakra Stone Bracelet (mixed gemstones)
Multi-mineral/Gemstone assembly (primarily Quartz variety beads)
Natural White Pearl
Calcium Carbonate (Aragonite/Calcite) with Conchiolin - CaCO3