Organic Gemstone (Fossilized Resin)

Fossilized Rugose Coral in Limestone

Order Rugosa in Sedimentary Matrix (CaCO3)

Fossil bone or tooth fragment

Indeterminate fossilized vertebrate bone/tooth; taxonomic identification is not possible from this blurred image

Turquoise ring

Turquoise, hydrated copper–aluminum phosphate (CuAl₆(PO₄)₄(OH)₈·4H₂O)

Dragon Stone

Ohko Stone (Argillaceous sedimentary rock)

Chert / Flint

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Fossilized Shark Tooth

Chondrichthyes tooth

Petrified wood

Silicified fossil wood, commonly quartz/chalcedony (SiO₂) replacing wood

Petrified wood

Silicified wood (commonly quartz/chalcedony replacing wood)

Fossilized Shark Tooth (likely Sand Tiger Shark)

Carcharias taurus (fossilized hydroxyapatite/calcium phosphate)

Fossilized wood (petrified wood)

Silicified fossil wood; commonly quartz (SiO₂) replacing wood tissues

Chert / Flint (with Crinoid Stem Molds)

Microcrystalline Quartz (SiO2)

Fossilized wood or plant fragment

Petrified wood (silicified fossil wood; commonly Araucarioxylon or related taxa)

Polished fossilized wood (likely petrified wood)

Silicified wood; primarily quartz (SiO₂) replacing wood tissue

Fossilized Sand Tiger Shark Tooth

Carcharias taurus / Striatolamia macrota (mineralized as Hydroxylapatite/Francolite)

Likely amber-colored chert or chalcedony fragment

Microcrystalline quartz (SiO₂), possibly iron-stained chert; exact identification is uncertain from the image

Petrified Wood

Silicified Wood (SiO2)

Fossilized Shark Tooth (Megalodon or Carcharocles fragment)

Elasmobranchii (Fossilized tooth root / crown section)

Fossilized coral or stromatoporoid fragment

Likely tabulate coral (order Tabulata) or stromatoporoid; exact identification requires microscopy

Tumbled yellow chalcedony (likely honey agate or yellow jasper)

Microcrystalline quartz, SiO₂; precise identification is uncertain from the photograph

Orange chalcedony (carnelian), likely tumbled fragment

Cryptocrystalline quartz, SiO₂; chalcedony variety colored by iron oxides

Pearls (likely freshwater cultured pearls)

Pearl: nacre, primarily aragonite (CaCO₃) with conchiolin

Polished agate nodule

Agate, microcrystalline quartz (SiO₂), likely with chalcedony and iron-oxide inclusions

Carved Sea Turtle Figurine (Aventurine / Quartz / Jasper)

Quartz variety (SiO2) / Polycrystalline Quartz Aggregate

Turquoise (Dyed Howlite or Magnesite imitation)

Hydrated phosphate of copper and aluminum / CuAl6(PO4)4(OH)8·4H2O

Fossilized Horn Coral

Rugosa (Rugose Coral)

Polished carnelian agate

Microcrystalline quartz (SiO₂), chalcedony variety with iron-oxide coloration

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Fossilized Shark Tooth (Otodus)

Otodus obliquus

Fossil Shark Tooth

Carcharocles (Otodus) sp. or similar fossilized Chondrichthyes tooth

Chert Pebble (with fossil shell fragment)

Microcrystalline Quartz (SiO2) with Calcified Invertebrate Impression

Possible fossilized shell or coral fragment

Indeterminate biogenic carbonate, likely calcite (CaCO₃)

Fossilized bone fragment (probable mammalian tooth or bone)

Mineralized bone, commonly hydroxyapatite [Ca5(PO4)3(OH)] replaced or impregnated by silica/calcite

Fossil Coral (Rugose Coral Fragment)

Rugosa (extinct order of solitary and colonial corals)

Fossilized Horn Coral

Rugosa (Tetracoralla)

Septarian Nodule

Septarian Concretion (Calcite, Aragonite, and Limestone)

Petrified Coral (Agatized Coral)

Fossilized Anthozoa (Silicon Dioxide replacement - SiO2)

Fossilized Shark Tooth (Megalodon or Carcharocles species fragment)

Otodus megalodon / Carcharocles spp. (Apatite / Calcium Phosphate)

Fossiliferous Limestone

Biogenic Sedimentary Rock (Calcium Carbonate, CaCO3)

Fossilized Shark Tooth (Otodus)

Otodus sp. (calcium phosphate/hydroxylellite)

Likely yellow quartz gemstone ring

Quartz (SiO₂), possibly heat-treated citrine or lemon quartz; metal setting appears to be brass/gold-colored alloy

Fossilized tooth, likely a mammalian tooth fragment

Indeterminate fossil tooth; possibly an ungulate or carnivoran tooth

Pearl necklace

Pearl, primarily aragonite (CaCO₃) and conchiolin