Diamond (Princess Cut Faceted Gemstone)
Native Carbon (C)
Category
Browse mineral like industrial smelting waste specimens identified by the Rock Identifier community.
Diamond (Princess Cut Faceted Gemstone)
Native Carbon (C)
Sodalite
Sodalite - Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2)
Diamond
Diamond (Pure Carbon, C)
Quartz Cobble (with Iron Staining)
Silicon Dioxide (SiO2)
Golden Quartz (Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
Chert (Jasper/Flint variant)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Diamond
Diamond (C)
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
Chalcedony
Cryptocrystalline Quartz (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Diamond
Diamond (pure Carbon, C)
Ruby
Corundum (Al2O3 with chromium impurities)
Quartz Pebble
Silicon Dioxide (SiO2)
Iolite (Cordierite)
Cordierite (Magnesium Aluminum Silicate), Mg2Al4Si5O18
Diamond
Diamond (pure Carbon, C)
Peridot
Olivine (Magnesium Iron Silicate), (Mg, Fe)2SiO4
Clear Quartz (Druzy)
Crystalline Silicon Dioxide (SiO2)
Milky Quartz with Iron Inclusions
Quartz (Silicon Dioxide, SiO2)
Olivine/Peridot
Magnesium Iron Silicate (Mg,Fe)2SiO4
Quartz with Iron Staining
Silicon Dioxide (SiO2)
Diamond
Diamond (C)
Agate (specifically Oco or Banded Agate)
Agate (a variety of Chalcedony), SiO2 (Silicon Dioxide)
Diamond (or Cubic Zirconia)
Crystallized Carbon (C) for Diamond; Zirconium Dioxide (ZrO2) for CZ
Quartz Pebble
Silicon Dioxide (SiO2)
Basalt
Basalt (SiO2 percentage between 45% and 52%)
Rough Ruby
Corundum (Al2O3 with Chromium impurities)
Quartzite (Water-worn Pebble)
Metamorphosed Quartz Sandstone (SiO2)
Anthracite Coal
Anthracite
Sandstone (likely Quartzose)
Arenite (primarily SiO2)
Anthracite Coal
Anthracite (Carbon-rich metamorphic rock)
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals, (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)
Garnet-bearing Schist
Almandine Garnet (Fe3Al2(SiO4)3) in Mica Schist
Ferruginous Quartz (River Pebble)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Marble (Carrara Marble style)
Recrystallized Calcite (CaCO3)
Chert (Flint Nobule)
Silicon Dioxide (SiO2)
Quartzite with Quartz Veining
Quartzite (primarily SiO2)
Quartz (Tumbled/Polished Pebble)
Silicon Dioxide (SiO2)
Tiger's Eye (variations include Blue or Hawk's Eye)
Silicon Dioxide with Crocidolite inclusions (SiO2)
Chert / Jasper
Microcrystalline Quartz (SiO2)
Chert
Microcrystalline silica (SiO2)
Scoria (Red Lava Rock)
Scoria
Granite
Phaneritic Plutonic Felsic Rock