Ruby
Corundum (Al2O3 with Chromium trace impurities)
Category
Browse synthetic glass (often categorized as a simulated mineral) specimens identified by the Rock Identifier community.
Ruby
Corundum (Al2O3 with Chromium trace impurities)
Rutilated Quartz
Quartz (SiO2) with Rutile inclusions (TiO2)
Zircon
Zirconium Silicate (ZrSiO₄)
Silicon Carbide (Carborundum)
Silicon Carbide (SiC)
Azurite-Malachite (often a mixed specimen)
Azurite: Cu3(CO3)2(OH)2; Malachite: Cu2(CO3)(OH)2. The specimen appears to be a natural mixture or intergrowth of these two minerals.
Blue Agate Geode (Dyed)
Cryptocrystalline Quartz (SiO2)
Note: Item is not a geological specimen
Guitar Components (Steel, Nickel, Plastic, Wood)
Peridot gemstone pendant
Olivine, gem-quality forsteritic olivine (approximately (Mg,Fe)₂SiO₄)
Diamond
Diamond (C - Pure Carbon)
Goldstone (Red)
Aventurine Glass (Cupriferous glass)
Amethyst (Tumbled/Weathered Quartz)
Amethyst (SiO2 with iron impurities)
Ruby (Faceted)
Corundum (Al2O3 with Cr trace elements)
K2 Stone (or K2 Jasper)
Azurite-in-Granite (Potassium Feldspar, Quartz, Plagioclase, Muscovite, and Azurite)
Synthetic Resin Charm (Seal Shape)
Polymer Resin with plastic glitter / Polyethylene terephthalate glitters
Rutilated Quartz
SiO2 with TiO2 inclusions (Rutile)
Yellow-orange faceted gemstone, likely citrine or yellow topaz
Citrine: quartz, SiO₂; yellow topaz: Al₂SiO₄(F,OH)₂
Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
Prehnite
Prehnite, Ca2Al2Si3O10(OH)2
Ruby (set in a gold pendant)
Ruby (Variety of Corundum, Al2O3)
Magnetic Hematite
Magnetized Hematite (an iron oxide mineral, Fe2O3, that has undergone magnetization)
Sodium Polyacrylate (Superabsorbent Polymer)
Sodium Polyacrylate [-CH2-CH(COONa)-]n
Ruby
Corundum (mineral species), variety: Ruby (Al2O3 with Cr3+ as the chromophore)
Synthetic Wolf Plush (Non-mineral)
Canis lupus similis (Prop material: Polyester & Synthetic fibers)
Terrazzo (Synthetic Composite Rock)
Cementitious or Epoxy Resin-bound Aggregates
Lapis Lazuli (in Matrix)
Na8[Al6Si6O24]S2 (Lazurite as the primary component)
Rough Emerald (Beryl)
Emerald (Be3Al2(SiO3)6 with Cr/V impurities)
Moonstone (bead form)
Potassium Aluminum Silicate (KAlSi3O8) - a variety of Orthoclase Feldspar
Blue Dyed Agate
Cryptocrystalline Quartz (SiO2)
Diamond (or high-quality simulant like Cubic Zirconia)
Carbon (C) - Native Element
Smoky Quartz
Silicon Dioxide (SiO2)
Ruby
Corundum (Al2O3 with Chromium trace elements)
Ring with an Orange Inlay
N/A (Man-made object)
Lapis Lazuli
A metamorphic rock primarily composed of lazurite (Na,Ca)8[(S,SO4,Cl)2|(Al6Si6O24)], calcite (CaCO3), and pyrite (FeS2).
Diamond
Diamond (pure carbon; C)
Sodalite
Sodalite (Na4Al3Si3O12Cl)
Dyed Blue Agate
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Synthetic Blue Aura Quartz
Silicon Dioxide (SiO2) with Metallic Infusion
Opal
Hydrated Amorphous Silica (SiO2·nH2O)
Hematite
Iron(III) oxide (Fe2O3)
Blue Sapphire
Corundum (Al2O3)
Opal
Hydrated amorphous form of silica (SiO2·nH2O)
Diamond (Heart Cut)
Carbon (C)