Diamond
Diamond (Pure Carbon, C)
mineral
Category
Man Made Composite
Browse man made composite specimens identified by the Rock Identifier community.
Learn about Man Made Composite in the encyclopedia
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Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Sandstone (likely Fossiliferous)
Arenite / Fossiliferous Sandstone (SiO2 composition)
sedimentary
Rough Diamond
Pure Carbon (C)
mineral
Bituminous Coal (with Anthracite or Vitrinite inclusion)
Organic-rich Sedimentary Rock (Carboniferous classification)
sedimentary
Chert (Arrowhead Shard)
Microcrystalline silica (SiO2)
sedimentary
Rhodonite
Rhodonite (MnSiO3)
mineral
Lazulite
Lazulite (Mg,Fe2+)Al2(PO4)2(OH)2
mineral
Diamond (Cluster Ring)
Carbon (C)
mineral
Diamond
Carbon (C)
mineral
Chert (Chert / Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Diamond in Kimberlite
Diamond (C in Kimberlite Matrix)
igneous
Pearl
Calcium Carbonate (mostly Aragonite), CaCO3 (with conchiolin)
mineral
Rough Diamond
Diamond (pure Carbon, C)
mineral
Diamond
Native Carbon (C)
mineral
Diamond
Carbon (C)
mineral
Coquina
Bioclastic Limestone (composed primarily of CaCO3)
sedimentary
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Chert (and Jasper/Chalcedony mixture)
Microcrystalline Quartz (SiO2)
sedimentary
Rough Diamond
Diamond (pure Carbon, C)
mineral
Granite (Pegmatitic)
Phaneritic Felsic Igneous Rock
igneous
Sandstone (likely Quartzose Sandstone)
Arenite
sedimentary
Chert (specifically White Chert or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Diamond (in jewelry setting)
Carbon (C)
mineral
Pearl
Aragonite (CaCO3) with Conchiolin
mineral
Pink Marble
Recrystallized Limestone (Calcium Carbonate, CaCO3)
metamorphic
Sandstone
Arenite
sedimentary
Emerald (Rough)
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
mineral
Scoria
Scoria (a vesicular basalt or andesite)
igneous
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Quartz (likely)
Quartz (SiO2 - Silicon Dioxide)
Mineral
Pearl (with Peridot)
Calcium carbonate (CaCO3) + Conchiolin; Peridot: Magnesium iron silicate (Mg, Fe)2SiO4
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Diamond
Natural Diamond (Carbon, C)
gemstone
Specular Hematite (Specularite)
Iron Oxide (Fe2O3)
mineral
Sandstone
Arenite (SiO2 principal)
sedimentary
Chert (varieties: Flint or Jasper)
Silicon dioxide (SiO2) / Microcrystalline Quartz
sedimentary
Diamond (Faceted)
Carbon (C)
gemstone
Diamond (in jewelry setting)
Adamantine Carbon (C)
mineral
Chert (Chocolate or Brown Flint)
Chert (SiO2)
sedimentary
Quartz
Quartz (SiO₂)
Mineral
Chert (Flint/Chalcedony)
Silicon Dioxide (SiO2)
sedimentary