Synthetic (Not A Rock Or Mineral)

Man-made Ceramic / Clay Figurine

Aluminosilicate Ceramic (Processed Clay)

Small gold-colored jewelry piece with clear stones

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

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.

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 dark stone fragment

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

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.

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)

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

Unknown Rock Fragment

Unknown

Mixed rock and mineral collection

Unidentified assortment of geological specimens; individual species cannot be determined from the image

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.

Man-made Synthetic Material (Costume Faux Fur)

Synthetic Polymer (Polyester/Acrylic)

Not a rock

Not a rock

Not a rock

Not a rock

Not a rock

Not a rock

Polished opalite (likely man-made opalescent glass)

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

Likely green bottle glass, not a geological specimen

Manufactured soda-lime silicate glass

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

Anthropogenic textile material

Likely quartz-rich rock fragment

Indeterminate; possibly quartz-bearing granite or quartzite

Not a rock, mineral, or geological specimen

Opalite-style glass pendant

Man-made opalescent glass (not natural opal)

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

Unidentified rough rock fragment

Indeterminate; the image does not show enough detail for a reliable mineral or rock identification

Possible iron-rich pebble with a weathered inclusion

Unidentified; image alone does not support a reliable mineral or rock identification

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

Sedimentary Rock with Crafts (Pet Rock)

Sedimentary rock decorated with synthetic materials