Amber
Succinite (fossilized tree resin)
mineraloid
Category
Synthetic Polymer (Polylactic Acid)
Browse synthetic polymer (polylactic acid) specimens identified by the Rock Identifier community.
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White Sapphire
Corundum (Al2O3)
mineral
Diamond (or high-quality simulant like Cubic Zirconia)
Carbon (C) - Native Element
mineral
Opalite (a synthetic glass)
Silicon Dioxide (SiO2) with various additives; not a true mineral but a man-made gem simulant
Mineral Simulant (Synthetic Glass)
Mother of Pearl (Nacre)
Aragonite (layered with organic polymers), CaCO3
mineral
Amber
Succinite (fossilized tree resin)
mineraloid
Amber
Succinite (Approximate formula: C10H16O)
mineral
Amber
Succinite (specifically for Baltic amber; fossilized tree resin)
Organic (Sedimentary-associated)
Cubic Zirconia (Simulated Diamond)
Cubic Zirconia (ZrO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities and natural radiation
mineral
Tourmalinated Quartz
Crystalline Silicon Dioxide with Schorl inclusions (SiO2 + NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Ruby (set in a gold pendant)
Ruby (Variety of Corundum, Al2O3)
mineral
Carborundum (Silicon Carbide)
Silicon Carbide (SiC)
mineral
Opalite
Synthetic Glass, SiO2 base with metallic inclusions
mineraloid (synthetic)
Citrine
Citrine (Silicon Dioxide, SiO2)
mineral
Iolite (Cordierite)
Cordierite (Magnesium Aluminum Silicate), Mg2Al4Si5O18
Mineral
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
mineral
Blue Sapphire
Corundum (Al2O3 with trace Titanium and Iron)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz (with Druzy/Polished Edge)
Smoky Quartz (Silicon Dioxide, SiO2)
mineral
Ruby
Corundum (Al2O3 with Chromium trace elements)
mineral
Lapis Lazuli
Lapis lazuli (complex rock; primarily Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
metamorphic
Amber
Succinite (Fossilized Tree Resin, C10H16O)
mineral
Amber (with potentially inclusions)
Succinite (Fossilized Tree Resin)
Mineraloid
Amber
Succinite (specifically for Baltic amber); Fossilized Tree Resin (C10H16O)
Organic Mineraloid
Baltic Amber (Butterscotch or Egg Yolk Variety)
Succinite (C10H16O)
Organic Gemstone (fossilized resin)
Diamond
Diamond (C)
mineral
Opal
Hydrated amorphous form of silica (SiO2·nH2O)
mineral
Opal
Hydrated Amorphous Silica (SiO2·nH2O)
Mineral
Apatite
Apatite group mineral (e.g., Fluorapatite - Ca5(PO4)3F, Chlorapatite - Ca5(PO4)3Cl, Hydroxylapatite - Ca5(PO4)3(OH))
mineral
Emerald
Beryl (Be3Al2(SiO3)6) with trace Chromium/Vanadium
mineral
Diamond (Faceted)
Carbon (C)
gemstone
Blue Goldstone
Aventurine Glass (SiO2 with Cobalt/Copper inclusions)
man-made glass
Blue Goldstone
Aventurine Glass
man-made glass
Opalite
Man-made opalescent glass (SiO2 + metal oxides)
mineral (synthetic)
Amber
Succinite (approximate formula C10H16O)
mineraloid
Mother of Pearl (Nacre)
Aragonite (CaCO3) with Organic Matrix
mineral
Amber
Succinite (fossilized resin); C10H16O
mineraloid
Amber
Succinicum (C10H16O)
mineral
Red Amber (Burmite/Cherry Amber)
Succinite / Retinite (Organic Fossilized Resin, C10H16O)
Mineraloid (Organic)
Amber
Succinite (with empirical formula approximately C10H16O)
Organic Mineraloid
Anthracite Coal
Anthracite (Carbon ≥ 86%)
sedimentary