Moss Agate
Chalcedony (Silicon Dioxide, SiO2) with inclusions of Chlorite, Manganese, or Iron
mineral
Category
Mineral And Organic Gemstone
Browse mineral and organic gemstone specimens identified by the Rock Identifier community.
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Ferruginous Quartz
Silicon Dioxide (SiO2) with Hematite/Limonite impurities
mineral
Amber
Succinite (approximate formula C10H16O)
mineral
Green Jasper
Microcrystalline Quartz (SiO2) with mineral inclusions
sedimentary
Amber
Succinite (amorphous organic polymer)
mineral
Black Freshwater Pearls
Biogenic Calcium Carbonate (Aragonite/Calcite), CaCO3
mineral
Green Moss Agate
Silicon Dioxide (SiO2) with Mineral Inclusions
sedimentary
Amber
Succinicum (Organic polymer, largely C10H16O)
Organic Mineral
Moss Agate
Silicon Dioxide (SiO2) with Manganese/Iron Oxide inclusions
mineral
Amber (Raw Copal)
Fossilized Plant Resin (Gummite/Succinite)
mineral
Amber
Succinite (approximate formula C10H16O)
mineral
Amber
Succinite (C10H16O)
mineraloid
Precious Coral
Corallium rubrum (Calcium Carbonate, CaCO3)
mineral
Amber
Succinite (Formula: C10H16O)
mineral
White seed-bead gemstone strand, likely freshwater pearl or shell pearl
Pearl: nacreous calcium carbonate, chiefly aragonite (CaCO₃) in conchiolin; identification uncertain from image
gemstone
Mother of Pearl (Nacre) / Shell Fragment
Biogenic Calcium Carbonate (Aragonite and Conchiolin)
fossil
Fossil bivalve shell
Likely an extinct or modern-like ribbed cockle/scallop; exact genus requires locality and diagnostic hinge features
fossil
Fancy Jasper
Jasper (Cryptocrystalline Quartz, SiO2)
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
gemstone
Amber
Succinite (fossilized resin, C10H16O)
mineral
Moss Agate
Silicon Dioxide (SiO2) with inclusions of Manganese or Iron oxides
mineral
Chert (Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Pearl (Pendant)
Calcium Carbonate (Aragonite/Calcite) - CaCO3
gemstone
Petrified Wood
Silicified Wood (primarily SiO2)
mineral
Amethyst, Aquamarine, and Pearl Ring
SiO2 (Amethyst), Be3Al2Si6O18 (Aquamarine), CaCO3 (Pearl)
gemstone
Plume Agate
Cryptocrystalline Quartz (SiO2)
Mineral/Gemstone
Red Coral (Precious Coral)
Corallium rubrum (Calcium Carbonate, CaCO3)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
mineral
Amber
Succinite (approximate formula C10H16O)
mineral
Amber
Fossilized Tree Resin
gemstone
Amber
Succinite (C10H16O)
mineral
Jasper
Silicon Dioxide (Microcrystalline Quartz, $SiO_2$)
sedimentary
Pink Opal
Hydrated silica (SiO2 "n H2O)
mineral
Pearl
Calcium Carbonate (CaCO3) - Aragonite/Calcite organic gemstone
mineral
Amber
Fossilized Tree Resin (C10H16O)
gemstone
Amber
Succinite (Formula: C10H16O)
Mineraloid
Amber
Succinite (specifically for Baltic amber); Chemical formula approximately C10H16O
mineral
Amber
Succinite (Resinous fossilized tree sap)
Mineraloid
Blue Apatite
Apatite - Ca5(PO4)3(F,Cl,OH)
mineral
Moss Agate and Hematite
Silica (SiO2) with fibrous inclusions of Manganese or Iron; Hematite (Fe2O3)
mineral
Turquoise, Pearl, and Coral Necklace
CuAl6(PO4)4(OH)8·4H2O (Turquoise) / CaCO3 (Pearl and Coral)
mineral
Amber (Tumbled/Polished)
Succinite (Fossilized Tree Resin)
mineraloid