Larvikite
Larvikite (Anorthoclase-rich Monzonite)
igneous
Category
Not A Natural Rock
Browse not a natural rock specimens identified by the Rock Identifier community.
Raw Diamond
Diamond (pure Carbon, C)
mineral
Dalmation Stone (often called Dalmatian Jasper)
Antiperthite-rich Microgranite
igneous
Jewelry Chain with Blue and Clear Gemstones (Likely Cubic Zirconia)
Cubic Zirconia (ZrO₂), Silver or White Gold/Platinum Alloy
Mineral (synthetic) and Metal (precious/base)
Ruby
Corundum (mineral species), variety: Ruby (Al2O3 with Cr3+ as the chromophore)
Mineral
Natural White Pearl
Calcium Carbonate (Aragonite/Calcite) with Conchiolin - CaCO3
mineraloid
Aquamarine
Beryl (Be₃Al₂Si₆O₁₈), specifically a blue or cyan variety
Mineral
Amber
Succinite (fossilized tree resin)
mineral
Amber
Succinite (fossilized resin)
Mineral
Limonite/Hematite Ironstone
Goethite-rich Ironstone (FeO(OH) · nH2O)
sedimentary
Gold Nugget
Native Gold (Au)
mineral
Glauconitic Sandstone
Glauconitic Sandstone (Greensand)
sedimentary
Sandstone (with Iron Oxide staining)
Arenite (primarily SiO2 with Fe2O3 staining)
sedimentary
Heat-Treated Citrine (Amethyst-based)
Quartz (Silicon Dioxide) - SiO2
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Smoky Quartz (SiO2)
mineral
Smoky Quartz Cluster
Silicon Dioxide (SiO2)
mineral
Diamond
Carbon (C)
mineral
Dalmatian Stone (Dalmatian Jasper)
Dalmatian Stone (A variety of Perthite / Aplite)
Igneous
Green Aventurine
Silicon Dioxide (SiO2) with Fuscite inclusions
mineral
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
mineral
Rough Green Adventurine
Aventurine (Variety of Quartz, SiO2)
metamorphic
Green Aventurine
Silicon dioxide (SiO2) with inclusions of Fuchsite mica
metamorphic
Diamond
Carbon (C)
mineral
Granite
Granite (primarily Quartz, Feldspar, and Mica)
igneous
Ruby (Raw/Rough)
Corundum (Al2O3 with Chromium trace)
mineral
Rough Diamond
Diamond (pure Carbon, C)
mineral
Sandstone (Ferruginous)
Arenite with Iron-Oxide Cement
sedimentary
Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
metamorphic
Ironstone Concretion (Pot Stone)
Siderite or Limonite Concretion (FeCO3 or FeO(OH)·nH2O)
sedimentary
Granite Pebble
Granite; primarily composed of Quartz (SiO2), Feldspar (KAlSi3O8), and Mica
igneous
Goldstone
Aventurine glass (Synthetic glass with copper inclusions)
mineraloid / man-made glass
Granite
Granitoid
igneous
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
metamorphic
Blue Sapphire
Corundum (Al2O3 - Aluminum Oxide)
mineral
Opalite
Synthetic Opalised Glass
mineral
Lapis Lazuli (Tumbled Specimen)
Lapis Lazuli (Aggregate rock containing Lazurite: (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2)
metamorphic
Amber (specifically Red or Cherry Amber)
Succinite (Resinite); Chemical formula: C10H16O
Mineraloid
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Slag (Industrial Glass)
Artificial Vitreous Silicate
mineraloid (anthropogenic)
Cullet Glass (sometimes mistaken for Blue Obsidian or Slag)
Amorphous Silicon Dioxide (SiO2) with chemical additives (e.g., Cobalt for blue color)
mineraloid / industrial byproduct