Organic Gemstone (Fossilized Resin)

Red coral beads

Precious coral, commonly Corallium rubrum (calcium-carbonate skeleton)

White Coral

Corallium rubrum (biocarbonate calcium) / CaCO3

Honey-colored amber

Amber (fossilized plant resin; chiefly polymerized terpenoid compounds)

Fossil Snail Shell (Embedded in Resin)

Gastropoda fossil

Polished amber-like resin specimen

Likely copal or amber (fossilized plant resin), possibly with a dark inclusion

Likely tumbled amber or honey-colored quartz

Uncertain; possible amber (fossilized resin) or citrine quartz (SiO₂)

Amber

Succinates

Tumbled amber-like pebble, possibly amber or amber-colored resinous stone

Likely fossilized tree resin (amber; largely polymerized terpenes), but identification is uncertain from the image

Tumbled amber-like brown stone

Uncertain; likely brown jasper or iron-rich chert, possibly amber imitation

Likely polished amber or amber-like resin specimen

Amber (fossilized plant resin), chiefly polymerized diterpenoid resin; exact identification uncertain from the image

Amber

Succinite (C10H16O)

Amber-bearing Coal/Sedimentary Rock

Bituminous coal or carbonaceous siltstone with Fossilized Tree Resin (C10H16O)

Backlit translucent mineral specimen, possibly amber or orange calcite

Undetermined; visual appearance alone cannot distinguish amber from calcite or other translucent minerals

Baltic Amber (Raw)

Succinite

Polished amber (possibly imitation or treated amber)

Amber—fossilized tree resin; mostly polymerized terpenoid compounds (not a mineral)

Red coral earrings

Corallium rubrum or related precious coral (calcareous coral skeleton; primarily aragonite, CaCO₃)

Small polished amber or brown gemstone

Indeterminate from image; possibly amber (fossilized plant resin) or brown chalcedony/quartz

Pearl

Calcium Carbonate (CaCO3) - Aragonite/Calcite organic gemstone

Carved red coral bead (likely coral or coral-colored resin)

Corallium spp. (precious coral; calcium carbonate, CaCO₃)

Polished amber-colored translucent stone, likely citrine or yellow chalcedony

Most consistent with quartz (SiO₂), potentially citrine; translucent yellow chalcedony is another possibility

Burmese Amber (Burmite)

Burmite (C10H16O)

Amber

Fossilized plant resin; chiefly polymerized terpenoid hydrocarbons (succinite when Baltic-type)

Jasper (Petrified Wood variant)

Silicon Dioxide (SiO2) with iron oxide inclusions

Pearl and Garnet Glass

Calcium Carbonate (CaCO3) for pearl; Silicon Dioxide (SiO2) for glass

Fossilized Nut / Coprolite / Concretion

Trace Fossil / Permineralized Plant Material

Likely raw amber-bearing rock or amber-like resin

Amber (fossilized plant resin), chiefly polymerized terpenoid compounds; exact identification is uncertain from the image

Amber

Succinates (C10H16O)

Coprolite

Fossilized Feces

Amber

Fossilized tree resin; commonly derived from ancient conifers

Fossilized Bone

Petrified Bone / Biogenic Sedimentary

Rough amber-like brown mineral specimen

Uncertain from photograph; possibly iron-stained quartz, common opal, or resinous amber

Fossiliferous Limestone

Calcium Carbonate (CaCO3) with marine fossils

Dinosaur Claw (Dromaeosaurid)

Dromaeosaurid ungual (potential Deinonychus or Velociraptorine)

Tumbled amber-colored mineral or glassy pebble

Uncertain; likely chalcedony/quartz, possibly resinous amber or slag glass

Amber

Succinite

Fossilized Bone

Vertebrate fossil (mineralized bone)

Fossiliferous Shale

Carbonaceous Shale (with potential plant/aquatic fossils)

Fossilized Bone

Permineralized Vertebrate Bone

Fossilized Coral (Petrified Coral)

Lithostrotionella (example genus) / Scleractinia

Amber-colored chalcedony (carnelian), possibly amber

Chalcedony: microcrystalline quartz (SiO₂); amber: fossilized tree resin

Amber (possibly polished or rough amber)

Natural fossil resin; not a mineral, with variable organic composition dominated by polymerized terpenes

Orgonite Pyramid (containing Amethyst and mixed minerals)

Silicon Dioxide (SiO2) in synthetic resin