Amber
Succinite (C10H16O)
gemstone
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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Chert / Jasper
Silicon Dioxide (SiO2)
sedimentary
Pearl
Aragonite (CaCO3 with conchiolin)
mineral
Black Pearl (Tahitian Pearl)
Aragonite / Calcite (CaCO3) with Conchiolin
mineral
Bamboo Leaf Jasper
Silicified Siltstone or Jasper (SiO2)
sedimentary
N/A - Image does not contain a rock or mineral
Anthropogenic textile material
Non-geological
Amber
Succiniferous organic material (Succinite)
fossil
Chert (Nodular)
Chert (SiO2 - Microcrystalline Quartz)
sedimentary
Coal (Bituminous Coal)
Caustobiolith / Sedimentary Rock
sedimentary
Amber
Succinate (Organic Fossilized Resin)
mineraloid
Chert (often called Flint or Jasper)
Chert (Microcrystalline or Cryptocrystalline Silica, SiO2)
sedimentary
Blue Apatite
Calcium Phosphate (Ca5(PO4)3(F,Cl,OH))
mineral
Black Limestone
Bituminous Limestone (Calcium Carbonate - CaCO3)
sedimentary
Red Coral
Corallium rubrum (Calcium Carbonate, CaCO3 with Carotenoid pigments)
Mineraloid (Organic Gemstone)
Lapis Lazuli
Na8(Al6Si6O24)S2 (composed primarily of Lazurite, Calcite, and Pyrite)
metamorphic
Sedimentary Rock with Crafts (Pet Rock)
Sedimentary rock decorated with synthetic materials
sedimentary
Amber
Succinate (Fossilized Tree Resin)
mineraloid
Lapis lazuli
Lapis lazuli; primarily lazurite (Na₃Ca(Si₃Al₃)O₁₂S), with calcite and pyrite
metamorphic
Note: This is a Man-Made Object (Costume/Prop Patch)
Synthetic fiber and pigments (Cellulose/Plastic-based composite)
Non-geological
Bauxite
Bauxite (Mixture including Gibbsite Al(OH)3, Boehmite γ-AlO(OH), and Diaspore α-AlO(OH))
sedimentary
Man-made Synthetic Material (Plastic/Composite)
Acrylonitrile Butadiene Styrene (ABS) or High-Impact Polystyrene (HIPS)
Non-geological / Synthetic
Pearl
Nacre (primarily aragonite, CaCO₃, in an organic conchiolin matrix)
gemstone
Limestone with Fossil Fragments
Bioclastic Carbonate Rock (CaCO3)
sedimentary
Fossil gastropod shell
Fossilized marine gastropod; exact genus/species cannot be determined from the image
fossil
Amber
Succinite (C10H16O)
mineraloid
Melo Melo Pearl (or Golden Chalcedony / Yellow Jasper Sphere)
Non-nacreous calcium carbonate pearl (or SiO2 - Silicon Dioxide)
gemstone
Bituminous Coal
Organic sedimentary rock (humic coal)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Sandstone with Brachiopod Mold Fossil
Sedimentary rock (Sandstone) with indeterminate Brachiopod mold
fossil
Natural freshwater pearls
Pearl (nacreous calcium carbonate; chiefly aragonite, CaCO₃)
gemstone
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Amber Dragonfly Brooch
Succinited (Baltic Amber)
fossil
Probable amber fragment
Amber (fossilized plant resin; chiefly amorphous organic resin, commonly dominated by succinite)
gemstone
Petrified Wood
Silicified Wood (SiO2)
fossil
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Likely bituminous coal
Coal, predominantly carbon-rich organic matter; exact rank cannot be confirmed visually
sedimentary
Petrified wood
Silicified wood, commonly quartz (SiO₂) replacing woody tissue
fossil
Dendritic Agate
Silicon Dioxide (SiO2) with Manganese/Iron Oxide inclusions
sedimentary
Amber
Succinite (C10H16O)
Mineraloid (Organic)
Amber
Succinite (Fossilized Tree Resin), C10H16O
Organic Mineraloid
Sandstone (with Moss)
Quartz Arenite / Sandstone
sedimentary
Picture Jasper
SiO2
mineral