Organic Gemstone (Fossilized Resin)

Polished fossilized wood (petrified wood), likely agatized

Silicified wood; predominantly microcrystalline quartz/chalcedony (SiO₂), with iron-oxide coloration

Fossilized Shark Tooth (Eroded)

Carcharodon sp. or Otodus sp. fragment (likely)

Possible fossilized ammonite or concretion

Indeterminate fossil specimen; possibly an ammonoid mold/cast in iron-rich sedimentary rock

Fossilized Crab Carapace (Concretion)

Decapoda (fossil), typically preserved in calcite or siderite concretion

Peanut Wood

Silicified (Petrified) Wood - SiO2 (Silicon Dioxide)

Fossilized coral (likely honeycomb or branching coral)

Fossil coral; probable Scleractinia or Tabulata, composition mainly microcrystalline CaCO₃

Fossil Shell (Bivalve)

Phylum Mollusca, Class Bivalvia (typically composed of Calcium Carbonate / CaCO3)

Fossilized Brachiopod Shell / Mold

Phylum Brachiopoda (Fossilized organic matrix replaced by Silica/Calcite)

Blue chalcedony (likely dyed or assembled cabochon)

Microcrystalline quartz, SiO₂ (chalcedony)

Fossilized bone fragment, possibly dinosaur or large mammal bone

Fossil bone; mineralized apatite (carbonate-fluorapatite), commonly Ca₅(PO₄)₃(F,OH)

Turquoise cabochon (likely stabilized or imitation)

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

Polished moss agate (likely)

Chalcedony, microcrystalline SiO₂, with included green minerals such as chlorite or hornblende

Fossiliferous Limestone

Sedimentary rock containing Indeterminate Fossil remains (likely Crinoid stem or Bryozoan fragment)

Seashell Fossil

Invertebrate fossil (phylum Mollusca)

Lepidodendron Fossil (Scale Tree)

Lepidodendron

Travertine

Calcareous Tufa (CaCO3)

Raw turquoise

Turquoise, CuAl6(PO4)4(OH)8·4H2O; likely turquoise-bearing rock with pale host matrix

Sandstone (likely Fossilized Wood or Concrete Simulacrum)

Arenite / Silicified Wood / Anthropogenic Concrete

Fossil Coral (Honeycomb Coral)

Favosites (extinct genus of Tabulate coral)

Fossil Shark Tooth

Chondrichthyes (class); likely Lamniformes (order) fossilized in Apatite/Hydroxyapatite

Fossil Shark Tooth

Odontaspididae (likely Carcharias sp.)

Shark Tooth Fossil

Vertebrate fossilized tooth (various genera such as Carcharodon, Otodus, or Negaprion)

Fossilized bone, likely a large vertebrate limb or rib fragment

Petrified bone; exact taxon indeterminate from the image

Petrified Wood with Lichen

Silicified Wood (SiO2) colonized by crustose lichens

Fossilized wood or bone fragment

Indeterminate permineralized organic fossil; possibly silicified wood or fossil bone

Fossilized Mammoth Tooth Fragment

Mammuthus primigenius (or Mammuthus sp.)

Fossilized Shark Tooth (Fragment)

Elasmobranchii gen. indet.

Fossiliferous Limestone Pebble

Calcite-rich Fossiliferous Marine Limestone

Glauconitic Sandstone (Greensand pebble)

Glauconitic Quartz Sandstone (K(Fe,Al)2(Si,Al)4O10(OH)2)

Decorative opal-like turtle mosaic

Likely imitation or assembled opal material; exact stones cannot be confirmed visually

Petrified Wood

Silicified Wood (SiO2)

Turquoise (likely stabilized or Howlite/Magnesite imitation)

Hydrated phosphate of copper and aluminium, CuAl6(PO4)4(OH)8·4H2O

Fossilized Shark Tooth (Basal Bone)

Otodus sp. (Mineralized Hydroxyapatite)

Turquoise inlay or stabilized turquoise jewelry fragment

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

Weathered fossilized wood (likely petrified wood)

Silicified wood; commonly quartz/chalcedony replacing wood tissue (SiO₂)

Turquoise cabochon ring

Turquoise, hydrated copper aluminum phosphate (CuAl₆(PO₄)₄(OH)₈·4H₂O); the stones may be stabilized or treated

Emerald and diamond ring

Emerald: beryl, Be3Al2Si6O18, colored green by chromium and/or vanadium; surrounding stones appear to be diamonds, crystalline carbon (C)

Turquoise cabochon ring

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

Polished carnelian agate

Microcrystalline quartz (chalcedony), SiO₂, colored mainly by iron oxides

Tumbled turquoise

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

Knightia Fossil in Limestone

Knightia eocaena in micritic limestone

Beaded mineral/crystal jewelry (likely turquoise and coral accents)

Variable; blue beads may be turquoise (CuAl6(PO4)4(OH)8·4H2O), with possible dyed howlite, glass, or composite materials