Organic (Anthropogenic)

Shale or Mudstone (Based on appearance)

Shale (fine-grained, laminated fissile sedimentary rock) / Mudstone (fine-grained, non-fissile sedimentary rock)

Petrified Wood

Silicified Wood / Fossilized Wood (SiO2)

Red Jasper

Red Jasper (variety of Chalcedony, SiO₂)

Probable amber fragment

Amber (fossilized plant resin; chiefly amorphous organic resin, commonly dominated by succinite)

Banded Chert

Chert (a microcrystalline variety of quartz, SiO2 with minor impurities)

Chert (varietal: Jasper or Flint likely, but definitive identification is difficult from image)

SiO₂ (silicon dioxide)

Pearl

Calcium Carbonate (Aragonite or Calcite) and Conchiolin

Shale

Shale (clastic sedimentary rock)

French Bulldog (Blue Variety)

Canis lupus familiaris

Coal (specifically Bituminous or Anthracite)

Organic sedimentary rock; primarily Carbon (C) with varying H, S, O, N

Pyrite

Pyrite (Iron Disulfide), FeS2

Brown Jasper (Likely)

Jasper (Cryptocrystalline Silicon Dioxide - SiO2)

Sea Glass (White/Clear)

Amorphous Silica (Alkali-Lime-Silica Glass), SiO2 + Na2O + CaO

Concrete Fragment

Hardened Portland Cement Composite

Cherry Creek Jasper (also known as Red Creek Jasper or Cherry Creek Agate)

Jasper, microcrystalline quartz (SiO₂)

Mookaite Jasper

Siliceous (chert) sedimentary rock, a form of Jasper

Pearls

Aragonite (calcium carbonate) and Conchiolin

Polished amber

Amber (fossilized plant resin), commonly succinite; organic mineraloid rather than a true mineral

Opalite (a synthetic glass, often confused with Opal)

Silicon dioxide glass (SiO2nH2O, for natural opal)

Shale or Argillite

Shale (fine-grained clastic sedimentary rock) or Argillite (low-grade metamorphic rock derived from shale)

Pyrite

Iron Pyrite (FeS2)

Conglomerate

Conglomerate

Mother of Pearl (Nacre)

Calcium Carbonate (primarily aragonite, with conchiolin)

Petrified Wood

Silicified Wood (SiO2)

Coal (most likely Bituminous or Anthracite)

Bituminous Coal (Grade of Coal), Anthracite (Grade of Coal)

Asphalt

Asphalt concrete (engineered material, not a naturally occurring rock/mineral in this form)

Petrified Wood

Silicified wood (Quartz/Chalcedony)

Sea Bean (Hamburger Bean)

Mucuna sloanei

Amber (and Citrine Quartz)

Succinite (Amber) and Silicon Dioxide (SiO2)

Amber (Simulated/Faturan Style)

Resin mix (Likely Phenolic/Celluloid if synthetic, Succinite if natural)

Baltic Amber (Butterscotch variety)

Succinite

Ambergris

Ambra grisea (Metabolic byproduct)

Baltic Amber (Butterscotch or Egg Yolk Variety)

Succinite (C10H16O)

Orange cabochon gemstone, likely amber or amber-like resin

Natural amber: fossilized plant resin (organic mineraloid), commonly succinite; exact identification requires testing

Coral (Precious Coral)

Corallium rubrum (Red Coral), Paracorallium japonicum (Momo Coral), Pleurocorallium elatius (Sardinian Coral), various other species within the Corallidae family. Chemically, it's primarily Calcium Carbonate (CaCO 3 ).

Hand-Drawn Gengar Pokémon Card Artist Item

Lignocellulosic Fiber (Cellulose, C6H10O5) with wax-based pigment (crayon/colored pencil)

Firewood (Wood Log)

Lignum (Plant tissue composed of cellulose and lignin)

Biological Bone (Patella/Knee)

Patella (part of the Human Skeletal System)

Fossil Shark Tooth (Cretaceous white shark type)

Squalicorax (commonly known as Crow Shark)

Baltic Amber (Butterscotch or Egg Yolk Variety)

Fossilized Tree Resin (Succinite); Approximate formula: C10H16O

Biological Specimen (Domestic Dog)

Canis lupus familiaris

Ambergris

Ambrein-rich Calculus