Synthetic Material (Not A Rock Or Mineral)

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

Polyester (Polyethylene terephthalate) / Faux Fur

Bouncy Ball (Synthetic Rubber Polymer)

Polybutadiene / Ethylene Vinyl Acetate (EVA)

Synthetic Resin Charm (Seal Shape)

Polymer Resin with plastic glitter / Polyethylene terephthalate glitters

Clam shell (likely a bivalve shell)

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

Small gold-colored jewelry piece with clear stones

Likely a metal setting holding small faceted gemstones; the stones cannot be identified from the image.

Red coral (coral beads)

Precious coral, usually Corallium spp.; composed primarily of calcium carbonate (calcite)

Note: Item is not a geological specimen

Homo sapiens (Dermal Appendage: Pilus)

Metallic Ornament / Jewelry

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

Man-made Synthetic Material (Plastic/Composite)

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

Note: Item is not a geological specimen

Guitar Components (Steel, Nickel, Plastic, Wood)

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

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

Unidentified dark stone fragment

Indeterminate from the image; possibly a dark mafic rock or black mineral

Pearl necklace

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

N/A (Non-Geological Object)

Green glass-like cabochon, likely synthetic glass or resin

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

Unidentified gray metallic object

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

Blue opalescent glass-like gemstone (possibly imitation opalite)

Likely man-made opalite glass; composition varies, typically silica-based glass

Mica-rich granite (likely biotite granite)

Granite, composed chiefly of quartz, feldspar, and mica (commonly biotite); exact minerals are uncertain from the image.

Faceted Gemstone

Unknown transparent mineral, possibly Diamond (C), Cubic Zirconia (ZrO2), Quartz (SiO2), or Glass

Opalite-style glass pendant

Man-made opalescent glass (not natural opal)

Red coral chip bracelet

Corallium spp.; skeleton composed primarily of calcium carbonate (aragonite)

Quartz (Druzy)

Silicon Dioxide (SiO2)

Red coral beads

Precious coral, commonly Corallium rubrum (calcium-carbonate skeleton)

Note on Image Identification: Textile

N/A (Anthropogenic material)

Man-made Synthetic Material (Costume Faux Fur)

Synthetic Polymer (Polyester/Acrylic)

Unable to Identify (Image Obscured)

Clear faceted gemstone in an ornate metal bracelet

Unidentified transparent faceted stone; possibilities include quartz (SiO₂), zircon (ZrSiO₄), or glass—image alone cannot distinguish them

Silicon Carbide (Carborundum)

Silicon Carbide, SiC

Druzy Quartz on Quartz Base

Silicon Dioxide (SiO2)

Sedimentary Rock with Crafts (Pet Rock)

Sedimentary rock decorated with synthetic materials

Quartz Druzy (on Matrix)

Silicon Dioxide (SiO2)

Not a geological specimen

N/A (man-made object)

Granite

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

Small stud earring with a purple gemstone (possibly amethyst)

Possible amethyst, a purple variety of quartz (SiO₂); identification is uncertain from the image

Goldstone (aventurine glass)

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

Cubic Zirconia

Zirconium dioxide (ZrO2)

Faceted clear gemstone ring, likely quartz or glass imitation

Unidentified colorless faceted material; quartz (SiO₂) is possible, but the image cannot distinguish it from glass or another gem

Gemstone ring (stone not identifiable)

Unknown; the small central stone may be a colorless gemstone or glass, and the surrounding metal is gold-colored alloy

Popcorn

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

Blue glass-like bead or gemstone keychain ornament

Indeterminate; likely cobalt-blue glass or synthetic blue spinel, not identifiable as a natural mineral from the image

Asphalt / Road Aggregate

Bituminous Conglomerate (synthetic)

Likely silicon carbide (carborundum)

Synthetic silicon carbide (SiC), likely blue-green crystalline grit