Lapis Lazuli
Lapis Lazuli (Mineral composition: Lazurite (Na,Ca)8(AlSiO4)6(SO4,S,Cl,OH)2, Calcite, and Pyrite)
metamorphic
Category
Organic Gemstone (Not A Rock)
Browse organic gemstone (not a rock) specimens identified by the Rock Identifier community.
Learn about Organic Gemstone (Not A Rock) in the encyclopedia
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Shale
Clastic sedimentary rock (primarily clay and silt minerals)
sedimentary
Black Limestone
Bituminous Limestone (Calcium Carbonate - CaCO3)
sedimentary
Amber
Succinate (Fossilized Tree Resin)
mineraloid
Sedimentary Rock with Crafts (Pet Rock)
Sedimentary rock decorated with synthetic materials
sedimentary
Banded Chert
Microcrystalline Quartz (SiO2)
sedimentary
Pearl
Aragonite (CaCO3 with conchiolin)
mineral
Note regarding baguette production (not a rock)
Digital text image - Somali language
not a rock
Sandstone (with Moss)
Quartz Arenite / Sandstone
sedimentary
Amber
Succinite (C10H16O)
Mineraloid (Organic)
Amber
Succinite (Fossilized Tree Resin), C10H16O
Organic Mineraloid
Moss-covered Rock Fragment
Weathered Rock Fragment with Epilithic Growth
sedimentary
Black Pearl (Tahitian Pearl)
Aragonite / Calcite (CaCO3) with Conchiolin
mineral
Petrified Wood
Silicified Wood (SiO2)
fossil
Coal
Anthracite / Bituminous Coal
sedimentary
Melo Melo Pearl (or Golden Chalcedony / Yellow Jasper Sphere)
Non-nacreous calcium carbonate pearl (or SiO2 - Silicon Dioxide)
gemstone
Bamboo Leaf Jasper
Silicified Siltstone or Jasper (SiO2)
sedimentary
Amber
Succiniferous organic material (Succinite)
fossil
Amber
Succinited (C10H16O)
fossil
Amber
Succinite (Fossilized Tree Resin)
mineraloid
Pearl
Organic gemstone (Calcium carbonate / CaCO3 + Conchiolin)
mineral
Limestone with Fossil Fragments
Bioclastic Carbonate Rock (CaCO3)
sedimentary
Amber
Succinates (Fossilized Tree Resin)
fossil
Chert (specifically Tan/Yellow Chert)
Chert (Microcrystalline or Cryptocrystalline Silica, SiO2)
sedimentary
Ruby in Fuchsite
Corundum (Al2O3) in Fuchsite (K(Al,Cr)3Si3O10(OH)2)
Mineral
Amber
Succinite (C10H16O)
mineraloid
Grass (Organic Matter/Soil)
Poaceae (family of monocotyledonous flowering plants)
Organic Materia (Not a rock or mineral)
Amber Dragonfly Brooch
Succinited (Baltic Amber)
fossil
Sandstone
Sandstone (Siliciclastic Sedimentary Rock)
sedimentary
Sandstone
Arenite (SiO2 composed primarily of quartz)
sedimentary
Chert
Silicon dioxide (SiO2)
Sedimentary
Blue Apatite
Calcium Phosphate (Ca5(PO4)3(F,Cl,OH))
mineral
Shale
Fissile Mudstone (Shale)
sedimentary
Dendritic Agate
Silicon Dioxide (SiO2) with Manganese/Iron Oxide inclusions
sedimentary
Amber Inlay Jewelry
Fossilized Resin (C10H16O)
Organic Gemstone (Biogenic)
Fossiliferous Limestone (Shell Fragment)
Biogenic Limestone (Calcium Carbonate / CaCO3)
sedimentary
Pearl
Nacre (Aragonite and Conchiolin), CaCO3
mineral
Amber
Succinite (specifically for Baltic amber; fossilized tree resin)
Organic (Sedimentary-associated)
Granite, possibly granodiorite
Coarse-grained felsic plutonic rock; chiefly quartz (SiO₂), potassium feldspar and plagioclase feldspar, with biotite and/or hornblende
igneous
Amber
Succinit (C10H16O)
mineraloid
Amber
Succinates (Organic Fossilized Resin)
mineraloid
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary