Ferruginous Quartz
Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)
Category
Browse mineral (processed alloy) specimens identified by the Rock Identifier community.
Ferruginous Quartz
Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)
Amazonite
Microcline (KAlSi3O8)
Amber
Succinite (Fossilized Tree Resin, C10H16O)
Amber
Succinite (fossilized resin)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Rhodonite, Gray Moonstone, and White Feldspar Mix
Multiple: MnSiO3 (Rhodonite), (K,Na)AlSi3O8 (Feldspar/Moonstone)
Red Jasper
Jasper (Silicon Dioxide, SiO2)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Gold
Native Gold (Au)
Titanium Aura Quartz (Bismuth-coated Druzy)
Silicon Dioxide (SiO2) with Titanium/Metal vapor coating
Yellow Quartz (Citrine or Iron-Stained Quartz)
Silicon Dioxide (SiO2)
Jasper
Jasper (Silicon Dioxide, SiO2)
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
Dyed Agate
Silicon Dioxide (SiO2) with artificial pigment
Green Aventurine
Quartz (Silicon Dioxide) with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)
Black Onyx
Cryptocrystalline Quartz (SiO2)
Tree Agate
Dendritic Agate (Silicon Dioxide, SiO2 + Manganese/Iron oxides)
Schorl (Black Tourmaline) in Quartz Matrix
Schorl: NaFe3Al6(BO3)3Si6O18(OH)4 (Complex Borosilicate)
Clear Quartz Crystal Cluster
Silicon Dioxide (SiO2)
Aura Quartz Geodes (Lab-Altered)
Silicon Dioxide (SiO2) with Metallic Vapor Deposition
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Rough Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Ruby (Corundum)
Al2O3 (Aluminium oxide with Chromium impurities)
Blue Lace Agate
Chalcedony (Silicon Dioxide, SiO2)
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
Red Jasper
Silicon dioxide (SiO2) with iron oxide inclusions
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
Smoky Quartz (Tumbled)
Silicon Dioxide (SiO2)
Sodalite
Na8(Al6Si6O24)Cl2 (Sodium Aluminum Silicate Chloride)
Megalodon Shark Tooth
Otodus megalodon
Man-made Synthetic Material (Not a rock or mineral)
Polyester (Polyethylene terephthalate) / Faux Fur
Pebble / Rounded Rock
Lithic fragment / Water-worn rock
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
Kambaba Jasper
Stromatolite / Fossilized Algae (Rhyolitic structure)
Milky Quartz Pebble
Silicon dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Banded Gneiss
Gneiss (High-grade metamorphic rock)
Porphyritic Basalt or Porphyry
Porphyritic Igneous Rock
Quartz (Milky Quartz)
Quartz (SiO2 - Silicon Dioxide)