Rock Identifier

Category

Mineral And Organic Gemstone

Browse mineral and organic gemstone specimens identified by the Rock Identifier community.

Learn about Mineral And Organic Gemstone in the encyclopedia

Black Shale

Jet

Malachite

Bumblebee Jasper

Bumblebee Jasper

Andesine

Aragonite

Dolomite

Albite

Pyrrhotite

Andesite

Andalusite

Andamooka Opal

Yellow Jasper (Mookaite style) (Silicon Dioxide (SiO2) with Goethite/Hematite inclusions) — sedimentary

Yellow Jasper (Mookaite style)

Silicon Dioxide (SiO2) with Goethite/Hematite inclusions

Amber (Succinates (Organic Fossilized Resin)) — mineraloid

Amber

Succinates (Organic Fossilized Resin)

Chert Nodule (Microcrystalline Silica (SiO2)) — sedimentary

Chert Nodule

Microcrystalline Silica (SiO2)

Translucent yellow-orange mineral specimen, possibly amber or citrine (Uncertain; amber is fossilized tree resin (organic), while citrine is quartz, SiO₂) — mineral

Translucent yellow-orange mineral specimen, possibly amber or citrine

Uncertain; amber is fossilized tree resin (organic), while citrine is quartz, SiO₂

Banded Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Banded Chert

Microcrystalline Quartz (SiO2)

Amber (Fossilized Tree Resin) — gemstone

Amber

Fossilized Tree Resin

Amber (Succinite (C10H16O)) — gemstone

Amber

Succinite (C10H16O)

Fossil Shark Tooth (Chondrichthyes (Class)) — fossil

Fossil Shark Tooth

Chondrichthyes (Class)

Petrified Wood (Silicified wood (Quartz replacement, SiO2)) — fossil

Petrified Wood

Silicified wood (Quartz replacement, SiO2)

Bamboo Leaf Jasper (Silicified Siltstone or Jasper (SiO2)) — sedimentary

Bamboo Leaf Jasper

Silicified Siltstone or Jasper (SiO2)

Petrified Wood (Silicified Wood (primarily SiO2)) — sedimentary

Petrified Wood

Silicified Wood (primarily SiO2)

Tahitian black pearl strand (Cultured pearl; aragonite (CaCO₃) nacre) — gemstone

Tahitian black pearl strand

Cultured pearl; aragonite (CaCO₃) nacre

Amber (Succiniferous organic material (Succinite)) — fossil

Amber

Succiniferous organic material (Succinite)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Chert (Jasper) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper)

Silicon Dioxide (SiO2)

Amber (Succinate (Organic Fossilized Resin)) — mineraloid

Amber

Succinate (Organic Fossilized Resin)

Natural Pearl (appearing in a jewelry setting) (Calcium Carbonate (mostly Aragonite), CaCO3 with Conchiolin) — mineral

Natural Pearl (appearing in a jewelry setting)

Calcium Carbonate (mostly Aragonite), CaCO3 with Conchiolin

Banded Siltstone Pebble (Siltstone (primarily SiO2, Al2O3, Fe2O3)) — sedimentary

Banded Siltstone Pebble

Siltstone (primarily SiO2, Al2O3, Fe2O3)

Chert (Flint Nodules) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint Nodules)

Silicon Dioxide (SiO2)

Amber (Succinite (C10H16O)) — mineraloid

Amber

Succinite (C10H16O)

Chert Nodule (Fossiliferous Chert) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Nodule (Fossiliferous Chert)

Microcrystalline Quartz (SiO2)

Amber (likely raw amber) (Fossilized tree resin; organic mineraloid, commonly containing succinite (not a true mineral)) — gemstone

Amber (likely raw amber)

Fossilized tree resin; organic mineraloid, commonly containing succinite (not a true mineral)

Chert (Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline Quartz (SiO2)

Fossil Coral (Phylum Cnidaria / Rugosa or Tabulata) — fossil

Fossil Coral

Phylum Cnidaria / Rugosa or Tabulata

Petrified Wood (Silicified Paleoxylon (SiO2)) — fossil

Petrified Wood

Silicified Paleoxylon (SiO2)

Amber (Succinite (specifically for Baltic Amber), Formula: C10H16O) — Organic Gemstone (often associated with Sedimentary sequences)

Amber

Succinite (specifically for Baltic Amber), Formula: C10H16O

Organic Gemstone (often associated with Sedimentary sequences)

Red Jasper (Quartz (SiO2) with iron oxide inclusions) — sedimentary

Red Jasper

Quartz (SiO2) with iron oxide inclusions

Chert (Chert (Microcrystalline Quartz, SiO2)) — sedimentary

Chert

Chert (Microcrystalline Quartz, SiO2)

Amber (Succinite (C10H16O)) — mineraloid

Amber

Succinite (C10H16O)

Chert / Chalcedony (Silicon Dioxide (SiO2)) — sedimentary

Chert / Chalcedony

Silicon Dioxide (SiO2)

Melo Melo Pearl (or Golden Chalcedony / Yellow Jasper Sphere) (Non-nacreous calcium carbonate pearl (or SiO2 - Silicon Dioxide)) — gemstone

Melo Melo Pearl (or Golden Chalcedony / Yellow Jasper Sphere)

Non-nacreous calcium carbonate pearl (or SiO2 - Silicon Dioxide)

Polished fossil bone fragment (Fossilized bone, likely mammalian or reptilian; exact taxon cannot be determined from the image) — fossil

Polished fossil bone fragment

Fossilized bone, likely mammalian or reptilian; exact taxon cannot be determined from the image

Chert (Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline Quartz (SiO2)

Fossiliferous Limestone (Limestone with embedded fossil cross-section) — sedimentary

Fossiliferous Limestone

Limestone with embedded fossil cross-section

Red Chert (Jasper) (Silicon Dioxide (SiO2)) — sedimentary

Red Chert (Jasper)

Silicon Dioxide (SiO2)

Amber (Succinite (C10H16O)) — Mineraloid (Organic)

Amber

Succinite (C10H16O)

Mineraloid (Organic)

Amber (Succinite (Fossilized Tree Resin), C10H16O) — Organic Mineraloid

Amber

Succinite (Fossilized Tree Resin), C10H16O

Organic Mineraloid

Petrified Wood (Silicified Wood (SiO2)) — mineral

Petrified Wood

Silicified Wood (SiO2)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Herkimer Diamond (Quartz (Silica - SiO2)) — mineral

Herkimer Diamond

Quartz (Silica - SiO2)

Black Jasper (Silicon Dioxide (SiO2) with impurities) — sedimentary

Black Jasper

Silicon Dioxide (SiO2) with impurities

Red Coral (Precious Coral) (Corallium rubrum (Calcium Carbonate, CaCO3)) — gemstone

Red Coral (Precious Coral)

Corallium rubrum (Calcium Carbonate, CaCO3)