Sodalite
Sodalite (Na8Al6Si6O24Cl2)
mineral
Category
Organic Gemstone (Sedimentary Associations)
Browse organic gemstone (sedimentary associations) specimens identified by the Rock Identifier community.
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Sedimentary Rock (Limestone or Siltstone pebble)
Sedimentary rock fragment
sedimentary
Pearl
Aragonite (CaCO3 with conchiolin)
mineral
Green Aventurine
Aventurine (Silicon dioxide, SiO₂)
Mineral; variety of Quartz
Quartz Crystal
Quartz (SiO₂)
Mineral
Fossilized Wood / Petrified Wood
Petrified Wood (Silicified Flora)
fossil
Translucent amber-colored gemstone, likely citrine or amber
Most plausibly quartz (SiO₂), specifically citrine; amber would be fossilized resin (organic polymer)
gemstone
Chrysocolla on Quartz/Rhyolite matrix
Hydrated copper phyllosilicate mineral: (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Tahitian black pearl strand
Cultured pearl; aragonite (CaCO₃) nacre
gemstone
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions
sedimentary
Chert (varietal Flint or Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Amber (Copal)
Succinate (Fossilized Tree Resin)
mineraloid
Chert (specifically Tan/Yellow Chert)
Chert (Microcrystalline or Cryptocrystalline Silica, SiO2)
sedimentary
Chert (Jasper variety)
Chert (SiO2)
sedimentary
Chert (Flint)
Microcrystalline or cryptocrystalline quartz (SiO2)
sedimentary
Yellow Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Commonly known as Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Nodular)
Chert (SiO2 - Microcrystalline Quartz)
sedimentary
Moss Agate
Silicon Dioxide (Chalcedony variety) with green hornblende or chlorite inclusions - SiO2
gemstone
Chert (Flint Nodules)
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Amber (Butterscotch/Egg Yolk Variety)
Succinite (Approx. C10H16O)
Organic Gemstone
Fossilized Bone
Petrified Bone / Biogenic Sedimentary
fossil
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Yellow Jade
Jadeite or Nephrite (NaAlSi2O6 or Ca2(Mg,Fe)5Si8O22(OH)2)
metamorphic
Chert (White-Tan variety)
Silicon dioxide (SiO2) / Microcrystalline Quartz
sedimentary
Amber
Succinited (C10H16O)
fossil
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Goethite / Limonite Gossan
Goethite, FeO(OH)
mineral
Goethite
Goethite (FeO(OH))
mineral
Chert (Flint)
Chert (Silicon Dioxide, SiO2)
sedimentary
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
sedimentary
Pearl
Calcium Carbonate (Aragonite) with Conchiolin; formula: CaCO3
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Chert (Jasper variety)
Silicon Dioxide (SiO2)
sedimentary
Chert (specifically Flint or Jasper variant)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Pink Coral
Corallium rubrum (or related species, composed of calcium carbonate)
gemstone
Unakite
Unakite (Epidote-Feldspar rock)
Metamorphic rock
Pegmatitic rose quartz with black tourmaline
Quartz (SiO₂) with schorl tourmaline (NaFe₃Al₆(BO₃)₃Si₆O₁₈(OH)₄), likely feldspar and mica
igneous
Amber
Succinite (C10H16O)
Mineraloid (Organic)
Chert (Commonly known as Flint or Jasper when pigmented)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Pearl
Organic gemstone (Calcium carbonate / CaCO3 + Conchiolin)
mineral