Diamond in Kimberlite
Diamond (C in Kimberlite Matrix)
igneous
Category
Man Made Material (Simulated Mineral)
Browse man made material (simulated mineral) specimens identified by the Rock Identifier community.
Granite
Granite (a phaneritic intrusive igneous rock consisting mainly of quartz, alkali feldspar, and plagioclase)
igneous
Sea Glass (Frosted Glass)
Amorphous Silica (SiO2) with various metal oxide impurities
Man-made material (Anthro-lithic product)
Jasper Marble
Silicon Dioxide (SiO2) with Impurities
sedimentary
Diamond
Diamond (pure Carbon, C)
mineral
Limonite (Iron Ore)
Hydrous Iron Oxide (goethite, lepidocrocite)
Mineral
Fire Opal (in Matrix)
Hydrated Silica (SiO2·nH2O)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Bismuth Crystal
Bismuth (Bi)
mineral
Limonite (Iron Ore)
Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)
mineral
Pyrite
Iron Disulfide (FeS2)
Mineral
Granite
Granite
Igneous
Chalcanthite (Likely Synthetic/Lab-Grown)
Hydrated copper(II) sulfate (CuSO4·5H2O)
mineral
Granite
Phaneritic Plutonic Felsic Rock
igneous
Obsidian
Obsidian (volcanic glass)
Igneous
Goldstone
Not a natural mineral or rock. It is an ornamental glass.
Manufactured Glass (Simulant)
Native Silver
Silver (Ag)
mineral
Dyed Quartz (often sold as 'Blue Quartz' or 'Blue Agate')
Silicon Dioxide (SiO2) with artificial pigment
mineral
Asphalt (Bituminous Concrete)
Bituminous mix / Anthropogenic conglomerate
man-made composite (lithified equivalent of sedimentary)
Granite
Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)
igneous
Synthetic Blue Aura Quartz
Silicon Dioxide (SiO2) with Metallic Infusion
mineral (synthetic/man-made coating)
Fire Opal (in matrix)
Hydrated Silica (SiO2·nH2O)
Mineraloid
United States Quarter Dollar
Cupronickel Clad Alloy (75% Copper, 25% Nickel over a 100% Copper core)
Metal / Man-made mineral-like object
Crackled Quartz (Blue Dyed)
Silicon Dioxide (SiO2) with anthropogenic dye
mineral
Sandstone (Ferruginous)
Arenite (with Iron Oxide)
sedimentary
Arfvedsonite with Garnet
Na3(Fe2+,Mg)4Fe3+Si8O22(OH)2
igneous
Vuggy Quartz on Matrix
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (primarily SiO2)
sedimentary
Pyrite (Fool's Gold) Cube
Iron Sulfide (FeS2)
mineral
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
Mineral
Limonite (Ironstone)
Limonite (mixture of hydrated iron oxides, primarily Goethite α-FeO(OH))
mineral
Petrified Wood
Silicified wood (Quartz/Chalcedony replacement of organic matter)
sedimentary
Diamond (or Diamond Simulant)
Carbon (C)
mineral
Breciated Limestone with Calcite Veins
Sedimentary Breccia (CaCO3)
sedimentary
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Pyrite
Iron Disulfide (FeS2)
mineral
Red Swirl Beads (Likely Resin or Glass, simulating Red Jasper or Agate)
N/A (for the beads as pictured); Red Jasper: SiO2 (Chert variety); Red Agate: SiO2 (Chalcedony variety)
Organic (if resin) or Synthetic (if glass); simulating Sedimentary or Metamorphic (for natural stones)
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrous ferric oxide)
mineral
Petrified Wood
Silicified Wood (SiO2 as Quartz/Chert/Chalcedony)
sedimentary
Granite Pebble
Granite (composed primarily of Quartz, Feldspar, and Mica)
igneous
Serpentinite
Serpentinite (composed primarily of serpentine-group minerals like antigorite, chrysotile, and lizardite; chemical formula varies but generally Mg3Si2O5(OH)4)
Metamorphic Rock
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral