Larimar
Pectolite (NaCa2Si3O8(OH))
Category
Browse synthetic glass (often categorized as a simulated mineral) specimens identified by the Rock Identifier community.
Larimar
Pectolite (NaCa2Si3O8(OH))
Strawberry Quartz
Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)
Colorless faceted gemstone, likely glass or quartz
Uncertain; possibly quartz (SiO₂), but the strong uniform brilliance and apparent molded/faceted form may indicate leaded glass or cubic zirconia
Composite Turquoise or Reconstituted Turquoise with Copper inclusions
CuAl6(PO4)4(OH)8·4H2O (Turquoise) mixed with matrix and copper/bronze flakes
Chalcanthite
Copper(II) sulfate pentahydrate (CuSO4·5H2O)
Blue stone cabochon, likely lapis lazuli or dyed stone
Lapis lazuli: lazurite-rich rock, chiefly (Na,Ca)₈(AlSiO₄)₆(S,SO)₂; exact identification is uncertain from the image
Red gemstone ring, possibly synthetic ruby or red glass
Unidentified red stone; ruby is corundum (Al₂O₃), but the image cannot confirm its identity
Dyed Crackle Quartz
Silicon Dioxide (SiO2) with synthetic dye
Amethyst jewelry centerpiece
Amethyst, purple quartz (SiO₂), likely set with colorless diamonds or other gems
Blue faceted gemstone, likely sapphire
Corundum (Al₂O₃), likely blue sapphire; identity cannot be confirmed from the photograph alone
Pink Sapphire
Corundum (Al2O3 with trace Chromium and Iron)
Bouncy Ball (Synthetic Rubber Polymer)
Polybutadiene / Ethylene Vinyl Acetate (EVA)
Cubic Zirconia
Zirconium Dioxide (ZrO2)
Painted River Rock
Artificially Coated Sedimentary Rock
Opalite
Man-made synthetic glass with opalescent effects (SiO2 + metal oxides)
Yellow faceted gemstone, likely citrine or yellow beryl
Quartz (SiO₂), if citrine; beryl (Be₃Al₂Si₆O₁₈), if heliodor
Blue Sapphire
Corundum (Al2O3)
Smoky Quartz
Silicon Dioxide (SiO2)
Chalcanthite
Copper(II) sulfate pentahydrate (CuSO4·5H2O)
Smoky Quartz
Silicon Dioxide (SiO2)
Faceted blue gemstone ring, likely synthetic spinel or glass; identity uncertain
Possibly synthetic blue spinel (MgAl₂O₄) or laboratory sapphire (Al₂O₃); the clear side stones may be cubic zirconia or glass
Hematite cameo or hematine imitation
Hematite (Fe₂O₃); possibly synthetic hematine or black glass
Blue Goldstone
Aventurine Glass
Tiger’s eye
Quartz (SiO₂), fibrous pseudomorph after crocidolite
Smoky Quartz
Silicon Dioxide (SiO2)
Tumbled labradorite beads
Labradorite, a calcium-rich plagioclase feldspar (approximately (Ca,Na)(Al,Si)₄O₈)
Green cabochon gemstone pendant, likely turquoise or dyed green turquoise
Probably turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; exact identification requires testing
Malachite
Copper carbonate hydroxide [Cu2CO3(OH)2]
Sapphire
Corundum (Al2O3)
Magnetite or Hematite-rich Ore
Magnetite (Fe3O4) or Hematite (Fe2O3)
Emerald
Beryl (Be3Al2(SiO3)6) with trace Chromium/Vanadium
Colorless faceted gemstone, likely cubic zirconia
Cubic zirconia (synthetic ZrO₂), possibly glass or white sapphire
Colorless faceted gemstone, likely cubic zirconia or diamond
Uncertain from image; cubic zirconia (ZrO₂) is a common diamond simulant, while diamond is crystalline carbon (C)
Ruby (or potential synthetic/imitation)
Corundum (Al2O3)
Likely weathered pebble or mineral fragment
Indeterminate; possibly quartz-rich stone, iron-stained feldspar, or a small chert fragment
Painted Rock
Weathered Sedimentary Rock (Painted)
Red cabochon gemstone ring, likely synthetic ruby or red glass
Possibly corundum (Al₂O₃, chromium-colored); identity cannot be confirmed from the image
Diamond
Natural Diamond (Carbon, C)
Dalmatian Stone
Dalmatian Jasper (a misnomer) / Perthitic Feldspar Rock
Ruby (varieties of Corundum)
Aluminum oxide (Al2O3) with Chromium traces
Man-made Green Quartz (Lab-grown or Treated)
Silicon Dioxide (SiO2) with artificial coloration
Red faceted gemstone, likely synthetic ruby or red spinel
Ruby: corundum (Al₂O₃); spinel: MgAl₂O₄; visual identification alone is insufficient