Diamond
Cubic Carbon (C)
Category
Browse industrial byproduct (anthropogenic material) specimens identified by the Rock Identifier community.
Diamond
Cubic Carbon (C)
Vesicular Basalt or Scoria
Basalt (extrusive volcanic rock)
Chert (with Limestone/Carbonate matrix)
Sedimentary cryptocrystalline silica (SiO2)
Quartz (likely Herkimer Diamond style)
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Herkimer Diamond
Quartz (Silicon Dioxide - SiO2)
Jasper
Agate/Jasper (Microcrystalline Quartz, SiO2)
Rough Diamond
Diamond (pure Carbon, C)
White Topaz
Aluminum Silicate Fluoride Hydroxide; Al2SiO4(F,OH)2
Turquoise and Hematite
CuAl6(PO4)4(OH)8·4H2O (Turquoise) and Fe2O3 (Hematite)
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Yellow Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Satin Spar (often marketed as Selenite)
Gypsum (CaSO4·2H2O)
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
Pyrite in Quartz
Silicon Dioxide (SiO2) with Iron Sulfide (FeS2)
Mica Schist
Schist (Biotite/Muscovite rich)
Gneiss (Metamorphosed Pebble)
Gneiss with Quartz/Feldspar banding
Milky Quartz with Chlorite inclusions
Silicon Dioxide (SiO2) with Chlorite group minerals
Mica Schist
Schist (Biotite/Muscovite dominant)
Quartz Geode
Crystalline Quartz (SiO2) within a sedimentary or volcanic host
Quartzite
Quartzite (SiO2)
Diamond (Cluster Setting)
Carbon (C) - Diamond
Pink Himalayan Salt Rock (Halite)
Halite (Sodium Chloride, NaCl)
Mixed Quartz Bracelet (Rose Quartz and Larimar-colored beads)
Silicon Dioxide (SiO2) with various inclusions
Marble
Recrystallized Calcite (CaCO3) or Dolomite (CaMg(CO3)2)
Diamond (specifically Blue Diamond color appearance)
Carbon (C) with trace Boron
Red Jasper
Silicon Dioxide (SiO2) with Ferric Iron inclusions
Milky Quartz with Mica
Silicon Dioxide (SiO2) with Muscovite Mica [KAl2(AlSi3O10)(OH)2]
Quartz with Iron Staining
Silicon Dioxide (SiO2) with Ferruginous Oxides
Anthracite Coal
Anthracite
Epithermal Gold Ore (in Quartz/Rhyolite matrix)
Auriferous Quartz (Au + SiO2)
Schist (Micaceous Schist)
Schist (containing mainly Muscovite and Quartz)
Diamond
Diamond (C)
Aquamarine (Beryl)
Beryllium aluminum silicate (Be3Al2Si6O18)
Aquamarine
Beryl (Be3Al2Si6O18 with iron impurities)
Limestone
Calcite-rich Sedimentary Rock (CaCO3)
Blue Calcite
Calcium Carbonate (CaCO3)
Vanadinite
Vanadinite (Pb5(VO4)3Cl)
Native Copper in Basalt
Cuprum (with Host Basalt)
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
Limonite Stained Basalt
Hydrated Iron Oxide on Mafic Volcanic Rock (FeO(OH)·nH2O)