Diamond
Diamond (C)
Category
Browse industrial byproduct (anthropogenic material) specimens identified by the Rock Identifier community.
Diamond
Diamond (C)
Peridot (Olivine)
Olivine, (Mg, Fe)2SiO4
Milky Quartz
Quartz / Silicon Dioxide (SiO2)
Cultured Marble (Synthetic)
Polymer-matrix composite (typically calcium carbonate in polyester resin)
Ruby in Matrix
Corundum (Al2O3)
Bauxite
Bauxite (Mixture of Al(OH)3, AlO(OH), and Fe2O3)
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
Ironstone (likely Limonite or Goethite)
Ferruginous sedimentary rock (FeO(OH)·nH2O)
Yellow Jasper
Silicon Dioxide (SiO2) - variety of Chalcedony
Diamond (or Diamond Simulant)
Carbon (C) - Native Element
Ruby (Raw/Rough)
Corundum (Al2O3 with Chromium trace)
Chert (specifically Flint or Common Opal variant)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Concrete with Aggregate
Composite construction material; primary matrix is Calcium Silicate Hydrate (C-S-H)
Chalk
Calcium Carbonate (CaCO3)
Sandstone (Red/Brown Variety)
Arenite (composed primarily of SiO2 with Fe2O3 iron oxide inclusions)
Diamond
Carbon (C)
Diamond
Native Carbon (C)
Rough Diamond
Diamond (pure Carbon, C)
Chert (and associated river cobbles)
Silicon dioxide (SiO2)
Diamond (set in jewelry)
Diamond (Carbon, C)
Banded Iron Formation (BIF)
Magnetite-Hematite Chert (Banded Iron Formation)
Chert (Nodule)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Asphalt (Bituminous Slate/Sandstone)
Asphaltum / Bituminous Rock
Olivine (often within Peridotite)
Magnesium iron silicate, (Mg,Fe)2SiO4
Turquoise
Turquoise - CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)
Quartzite
Quartzite (primarily SiO2)
Shale or Siltstone
Sedimentary Clastic Rock (Variable mineral composition including quartz and clay minerals)
Synthetic Wolf Plush (Non-mineral)
Canis lupus similis (Prop material: Polyester & Synthetic fibers)
Diamond (as set in a gold ring)
Carbon (C)
Diamond
Diamond (pure Carbon, C)
Quartzite with Dark Mineral Inclusions
Quartzite (primarily SiO2) with accessory minerals
Red Sandstone
Arenite (primarily Quartz with Hematite cement)
Mica Schist
Schist (Muscovite/Biotite Schist)
Diamond
Diamond (pure carbon, C)
Jasper
Jasper (Silicon Dioxide, SiO2)
Pink Cubic Zirconia (CZ)
Zirconium Dioxide (ZrO2)
Chert (Nodule)
Chert (Alpha-Quartz, SiO2)
Granite Pebble
Felsic Plutonic Rock (primarily Quartz, Feldspar, and Mica)
Brachiopod Fossil in Limestone
Phylum Brachiopoda (likely Order Spiriferida), CaCO3 (Calcite)
Mica Schist
Foliated Metamorphic Rock (Schist)
Olivine Peridotite
Peridotite (comprising Olivine (Mg,Fe)2SiO4 and Pyroxene)
Olivine/Peridot
Magnesium Iron Silicate (Mg,Fe)2SiO4