Amber
Succinite (Resinite), C10-H16-O
mineral
Category
Organic Gemstone (Not A Rock Or Mineral In The Traditional Sense, But Bio Mineralized Material)
Browse organic gemstone (not a rock or mineral in the traditional sense, but bio mineralized material) specimens identified by the Rock Identifier community.
Learn about Organic Gemstone (Not A Rock Or Mineral In The Traditional Sense, But Bio Mineralized Material) in the encyclopedia
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Pink Quartz
Silicon Dioxide (SiO2)
mineral
Fossilized Brachiopod
Brachiopoda (Phylum)
fossil
Sandstone with Iron Staining
Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)
sedimentary
Rose Quartz
Silicon Dioxide (Quartz), SiO2
mineral
Polished operculum (“Shiva eye” shell)
Calcium-carbonate shell operculum, commonly from a turban snail (family Turbinidae); not a mineral specimen
fossil
Polished bumblebee jasper (likely)
Calcite–sulfur-rich volcanic breccia, commonly sold as “bumblebee jasper”
mineral
Pearl
Calcium Carbonate (Aragonite) - CaCO3
mineral
Petrified Wood
Silicified Wood (SiO2)
fossil
Sedimentary Rock (Limestone or Siltstone pebble)
Sedimentary rock fragment
sedimentary
Iron-stained quartz-rich rock, likely quartzite or silicified breccia
Quartz (SiO₂), possibly quartzite with limonite/goethite iron oxides
metamorphic
Yellow Jasper
Silicon dioxide (SiO2) with iron oxide inclusions
mineral
Epidosite
Epidosite (Metasomatic calcium-aluminum silicate rock)
metamorphic
Precious Coral (Red Coral)
Corallium rubrum (Calcium Carbonate, CaCO3)
mineral
Granite
Granite (Felsic Plutonic Rock)
igneous
Seashell Fossil
Gastropoda fossil
fossil
Fossilized Shell
Invertebrate fossil (Bivalvia or Brachiopoda)
fossil
Chert (concretionary/nodular variant)
Microcrystalline Quartz (SiO2) with possible fossil or mineral inclusions
sedimentary
Garnet (likely Almandine or Pyrope)
Garnet Group (e.g., Almandine: Fe3Al2(SiO4)3; Pyrope: Mg3Al2(SiO4)3)
Mineral
Amber (Copal)
Fossilized Tree Resin
mineraloid
Limestone or Sandstone Cobble
Sedimentary rock (Calcium carbonate or Quartz based)
sedimentary
Fossilized Nut / Coprolite / Concretion
Trace Fossil / Permineralized Plant Material
fossil
Red bead-and-chain costume jewelry, likely glass or plastic
No geological identification; the red beads appear manufactured and cannot be identified as mineral from the image
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Banded Agate (Onyx type)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Red cabochon gemstone, likely carnelian
Carnelian: orange-red chalcedony, microcrystalline quartz (SiO₂)
gemstone
Fossilized tooth, likely mammalian molar
Indeterminate Mammalia; mineralized dentine and enamel
fossil
Sandstone
Arenite
sedimentary
Polished seam agate with druzy quartz and iron-oxide inclusions
Quartz (SiO₂), chiefly chalcedony with crystalline quartz and iron oxides/hydroxides
mineral
Sandstone
Sandstone (Quartz-rich Arenite / SiO2)
sedimentary
Iron-stained quartz vein rock
Quartz-rich vein material, predominantly SiO₂, with iron oxyhydroxides (goethite/limonite) and likely sulfide alteration
metamorphic
Sedimentary Rock with Crafts (Pet Rock)
Sedimentary rock decorated with synthetic materials
sedimentary
Turquoise
Turquoise - CuAl6(PO4)4(OH)8·4H2O
mineral
Sodalite
Na8(Al6Si6O24)Cl2
mineral
Amber beads
Amber, fossilized plant resin; largely polymerized terpenoid resin (not a mineral)
gemstone
Amber
Succinite (C10H16O)
mineral
Red Sandstone
Sandstone (Quartz Arenite / Arkose with Hematite cement)
sedimentary
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Fossilized Shark Tooth
Chondrichthyes (Class)
fossil
Amber
Succinite (approximate formula C10H16O)
mineral
Bloodstone (also known as Heliotrope)
Silicon Dioxide (SiO2) - variety of Chalcedony
mineral
Pearl and Garnet Glass
Calcium Carbonate (CaCO3) for pearl; Silicon Dioxide (SiO2) for glass
mineral and glass