Pearls
Pearl: biomineralized aragonite (CaCO₃) and conchiolin
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
View all →
Amber (Cherry or Red variety)
Succinite (with various trace amounts of organic compounds)
Organic Gemstone (not a rock)
Baltic Amber (Butterscotch or Egg Yolk Variety)
Succinite (chemical formula: C10H16O)
Organic Gemstone (not a rock or mineral)
Red Coral
Corallium rubrum (for precious red coral), although other species like Corallium japonicum and Paracorallium are also used.
Organic Gemstone (not a rock or mineral in the traditional sense, but bio-mineralized material)
Amber
Fossilized Tree Resin (C10H16O)
gemstone
Amber
Fossilized Tree Resin (C10H16O)
gemstone
Baroque cultured pearl necklace
Pearl: nacre composed mainly of aragonite (CaCO₃) and conchiolin
gemstone
Amber
Organic gemstone (Succinite)
mineral
Amber (possibly a small polished amber cabochon)
Fossilized tree resin; amber is an organic gemstone, not a mineral
gemstone
Red coral earrings
Corallium rubrum or related precious coral (calcareous coral skeleton; primarily aragonite, CaCO₃)
gemstone
Amber
Succinite (Organic Gemstone)
mineral
Colorless faceted gemstone, likely cubic zirconia or diamond
Uncertain from image; cubic zirconia (ZrO₂) is a common diamond simulant, while diamond is crystalline carbon (C)
gemstone
Faceted colorless gemstone, likely cubic zirconia or diamond
Cubic zirconia (zirconium dioxide, ZrO₂) or diamond (carbon, C)
gemstone
Not a rock
Not a rock
Not a rock
Not a rock
Not a rock
Not a rock
Not a rock
Not a rock
Not a rock
Amber
Succinicum (Organic Gemstone - Resinite)
mineraloid
Weathered Sedimentary Rock
Sedimentary Rock
Sedimentary
Amber
Succinite (fossilized tree resin), C10H16O
Organic Gemstone
Red Coral
Corallium rubrum
gemstone
Amber
Succinite (Fossilized Resin)
mineral
Amber
Succinate (Fossilized Tree Resin)
gemstone
Amber
Succinates (Fossilized Tree Resin)
mineral
Amber
Succinite (approximate formula C10H16O)
mineral
Amber (Copal)
Fossilized Tree Resin
mineraloid
Amber
Amber (C10H16O)
mineral
Amber
Succinicum (C10H16O)
mineral
Amber
Succinite (C10H16O)
mineral
Amber
Succinite (C10H16O)
gemstone
Amber
Succinite (Fossilized Resin)
gemstone
Natural Pearl
Calcium carbonate (primarily Aragonite and Conchiolin), CaCO3
mineral
Tahitian black pearl strand
Cultured pearl; aragonite (CaCO₃) nacre
gemstone
Amber (Rough Baltics/Beach Specimen)
Succinicum (Organic Gemstone - Fossilized Resin)
mineral
Amber (specifically Cherry Amber)
Succinite (with the chemical formula C10H16O)
Organic Gemstone (not a mineral)
Amber (Raw)
Succinite (Fossilized Resin)
mineraloid
Amber
Succinite
mineral
Pearl necklace
Pearl: biogenic calcium carbonate, primarily aragonite (CaCO₃), in a conchiolin matrix
gemstone
Pink granite
Granite, chiefly quartz, potassium feldspar, and plagioclase with minor mica
igneous
Pearl
Nacre (aragonite, CaCO₃, with conchiolin)
gemstone
Amber
Succinite (Approximate formula: C10H16O)
mineral
Petrified Wood
Silicified wood (primarily Silicon Dioxide, SiO2)
metamorphic
Amber
Organic gemstone (Succinite is common if from the Baltic)
mineral