Mineral And Organic Gemstone

Petrified Wood

Silicified Wood (primarily SiO2)

Pearl (Pendant)

Calcium Carbonate (Aragonite/Calcite) - CaCO3

Jasper

Silicon Dioxide (Microcrystalline Quartz, $SiO_2$)

Fossil bivalve shell

Likely an extinct or modern-like ribbed cockle/scallop; exact genus requires locality and diagnostic hinge features

Turquoise-and-coral silver jewelry brooch

Turquoise: hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O; red cabochons appear to be coral, likely set in silver

Red Coral (Precious Coral)

Corallium rubrum (Calcium Carbonate, CaCO3)

Amber

Succinite (Formula: C10H16O)

Polished moss agate (likely dendritic agate)

Chalcedony, microcrystalline quartz (SiO₂), with inclusions of manganese/iron oxides or hornblende

Tumbled amber

Fossilized plant resin; commonly succinite (C10H16O)

Precious Coral

Corallium rubrum (Calcium Carbonate, CaCO3)

White seed-bead gemstone strand, likely freshwater pearl or shell pearl

Pearl: nacreous calcium carbonate, chiefly aragonite (CaCO₃) in conchiolin; identification uncertain from image

Petrified Wood

Silicified Wood (SiO2)

Moss Agate

Silicon Dioxide (SiO2) with inclusions of Manganese or Iron oxides

Amber

Succinite (fossilized resin, C10H16O)

Amber

Succinite (approximate formula C10H16O)

Amber

Succinite (Formula: C10H16O)

Blue Apatite

Apatite - Ca5(PO4)3(F,Cl,OH)

Turquoise, Pearl, and Coral Necklace

CuAl6(PO4)4(OH)8·4H2O (Turquoise) / CaCO3 (Pearl and Coral)

Fossilized Shark Tooth

Selachimorpha fossil

Pink Opal

Hydrated silica (SiO2 "n H2O)

Plume Agate

Cryptocrystalline Quartz (SiO2)

Pearl

Nacre (primarily aragonite, CaCO₃, in an organic conchiolin matrix)

Moss Agate and Hematite

Silica (SiO2) with fibrous inclusions of Manganese or Iron; Hematite (Fe2O3)

Mookaite Jasper

Silicon Dioxide with Iron Oxide impurities (SiO2)

Yellow-brown translucent mineral fragment, likely citrine or amber

Quartz (SiO₂), if citrine; succinite (fossil resin), if amber

Amber

Succinite (C10H16O)

Pearl

Calcium carbonate (CaCO3) in the form of aragonite

Amber (likely Baltic amber)

Fossilized tree resin; chiefly polymerized diterpenoid resin (succinite)

Raw amber

Amber (fossilized plant resin; commonly succinite, C10H16O)

Amber

Fossilized Tree Resin

Fossil mammalian skull

Fossilized vertebrate bone; exact taxon cannot be determined from the image

Picture Jasper

SiO2

Amber

Succinite (Resinous fossilized tree sap)

Amber

Succinite (specifically for Baltic amber); Chemical formula approximately C10H16O

Amber

Fossilized Tree Resin (C10H16O)

Pearl

Calcium Carbonate (CaCO3) - Aragonite/Calcite

Pearl

Calcium carbonate (principally Aragonite, CaCO3) with Conchiolin

Amber

Succinates (fossilized tree resin), approximately C10H16O

Amber

Succiniferous fossil resin (C10H16O)

Pearl and Garnet Glass

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

Pearl

Calcium carbonate (CaCO3) + organic conchiolin (Biogenic Mineral)

Amber (Tumbled/Polished)

Succinite (Fossilized Tree Resin)