Diamond (in a jewelry setting)
Cubic Carbon (C)
Category
Browse marble specimens identified by the Rock Identifier community.
Diamond (in a jewelry setting)
Cubic Carbon (C)
Precious Coral
Corallium rubrum (Calcium Carbonate, CaCO3)
Chert (Flint)
Silicon Dioxide (SiO2)
Chert
Chert (Microcrystalline Quartz, SiO2)
Halite
Halite (NaCl)
Chert Pebble
Chert (SiO2)
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Pearl (Biogenic Mineraloid)
Calcium carbonate (CaCO3) primarily as Aragonite
Chert / Flint
Cryptocrystalline quartz (SiO2)
Chert (often called Flint or Jasper if reddish)
Microcrystalline Quartz (SiO2)
Serpentine
Serpentine group (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4
Limestone
Calcium Carbonate (CaCO3)
Jasper Pendant
Silicon dioxide (SiO2) with impurities
Serpentinite
Serpentinite ((Mg, Fe, Ni)3Si2O5(OH)4)
Diamond
Carbon (C)
Chert (Jasper/Flint variant)
Silicon Dioxide (SiO2)
Zebra Jasper (usually a trade name for Serpentine or Basalt blend)
Antigorite/Chrysotile (Serpentine family) - Mg3Si2O5(OH)4
Pyrite
Iron Sulfide (FeS2)
Limonite (Ironstone Concretion)
Hydrous ferric oxides (FeO(OH)·nH2O)
Limonite / Ironstone
Hydrated ferric oxide (FeO(OH)·nH2O)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (River Pebble)
Microcrystalline silica (SiO2)
Chalk
Calcium Carbonate (CaCO3)
Chert Pebble (Jasperoid/Flint)
Silicon Dioxide (SiO2) - cryptocrystalline quartz
Chert
Microcrystalline Quartz (SiO2)
Sandstone
Arenite
Chert (Jasper)
Silicon Dioxide (SiO2)
Diamond
Carbon (C)
Pearl
Calcium Carbonate (CaCO3) with Conchiolin
Chert
Microcrystalline Quartz (SiO2)
Serpentine
Serpentine group ((Mg, Fe, Ni, Al, Zn, Mn)3(Si, Al, Fe)2O5(OH)4)
Sandstone
Arenite (primarily SiO2)
Chert (Nodule)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Peridot
Olivine ((Mg, Fe)2SiO4)
Yellow Ochre / Limonite
Hydrated ferric oxide (FeO(OH)·nH2O)
Pearl
Calcium carbonate (CaCO3) - Aragonite/Calcite variety
Satin Spar (Gypsum)
Hydrous Calcium Sulfate (CaSO4·2H2O)
Serpentinite (Serpentine Rock)
Serpentinite is a rock composed of one or more serpentine group minerals, chiefly antigorite, chrysotile, and lizardite, with the general formula (Mg,Fe)3Si2O5(OH)4. Often includes other minerals like magnetite, talc, and chromite.
Orange Calcite
Calcium Carbonate (CaCO3)
Precious Red Coral
Corallium rubrum (Calcium Carbonate, CaCO3)
New Jade (Serpentine)
Antigorite / Serpentine group (Mg3Si2O5(OH)4)