Organic Gemstone (Not A Rock Or Mineral)

Baltic Amber (Butterscotch or Egg Yolk Variety)

Succinite (chemical formula: C10H16O)

Red Coral

Corallium rubrum (for precious red coral), although other species like Corallium japonicum and Paracorallium are also used.

Pearls

Pearl: biomineralized aragonite (CaCO₃) and conchiolin

Amber

Fossilized Tree Resin (C10H16O)

Note: Item is not a geological specimen

Homo sapiens (Dermal Appendage: Pilus)

Amber

Fossilized Tree Resin (C10H16O)

Pearl strand

Nacreous pearl, primarily aragonite (CaCO₃) with conchiolin protein

Metallic Ornament / Jewelry

N/A - This is an artificial object, not a geological specimen.

Clam shell (likely a bivalve shell)

Bivalvia; shell composed primarily of calcium carbonate (usually aragonite and/or calcite)

Note: Item is not a geological specimen

Guitar Components (Steel, Nickel, Plastic, Wood)

Pearl necklace

Pearl: biogenic calcium carbonate, primarily aragonite (CaCO₃), in a conchiolin matrix

Note: This is a Man-Made Object (Costume/Prop Patch)

Synthetic fiber and pigments (Cellulose/Plastic-based composite)

Man-made Synthetic Material (Plastic/Composite)

Acrylonitrile Butadiene Styrene (ABS) or High-Impact Polystyrene (HIPS)

N/A (Non-Geological Object)

Unidentified gray metallic object

Not determinable from the image; likely a metal screw or manufactured fastener rather than geological material

Baroque cultured pearl necklace

Pearl: nacre composed mainly of aragonite (CaCO₃) and conchiolin

Green glass-like cabochon, likely synthetic glass or resin

Unidentified green transparent material; possibly molded glass, synthetic spinel, or resin

Quartz (Druzy)

Silicon Dioxide (SiO2)

Unable to Identify (Image Obscured)

Druzy Quartz on Quartz Base

Silicon Dioxide (SiO2)

Not a geological specimen

N/A (man-made object)

Quartz Druzy (on Matrix)

Silicon Dioxide (SiO2)

Amber (possibly a small polished amber cabochon)

Fossilized tree resin; amber is an organic gemstone, not a mineral

Granite

Granite — a coarse-grained felsic intrusive igneous rock, typically composed of quartz, feldspar, and mica

Goldstone (aventurine glass)

Synthetic copper-bearing soda-lime glass; commonly sold as red goldstone

Popcorn

Zea mays everta (P. Wilson) (Botanical name for the corn variety)

Unknown Organic Object (likely a berry or fruit)

Not applicable; this is not a geological specimen. If it were a cranberry, its scientific name would be Vaccinium macrocarpon; if a cherry, it would be Prunus avium or Prunus cerasus.

Weathered Sedimentary Rock

Sedimentary Rock

Red coral earrings

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

Mother of Pearl (Nacre)

Calcium Carbonate (primarily aragonite, with conchiolin)

Polished opalite (likely man-made opalescent glass)

Opalite is a commercial name, not a mineral; typically opalescent glass, often soda-lime silicate glass

N/A - Image does not contain a rock or mineral

Anthropogenic textile material

Not a rock, mineral, or geological specimen

Natural Pearl

Calcium carbonate (primarily Aragonite and Conchiolin), CaCO3

Amber (Rough Baltics/Beach Specimen)

Succinicum (Organic Gemstone - Fossilized Resin)

Unidentifiable Specimen

Undetermined

Red Coral

Corallium rubrum

Man-made Synthetic Material (Not a rock or mineral)

Polyester (Polyethylene terephthalate) / Faux Fur

Amber beads

Amber, fossilized plant resin; largely polymerized terpenoid resin (not a mineral)

Green glass sphere/marble

Soda-lime glass (primarily SiO2, Na2O, CaO)

Amber

Succinite (Organic Gemstone)

Turquoise and Red Coral

Turquoise: CuAl6(PO4)4(OH)8·4H2O; Red Coral: Corallium rubrum (organic gemstone)