Man Made Material (Jewelry, Metal Alloy)

Slag (Industrial Glass/Glassy Rock)

Anthropogenic Vitreous Material

Polished brecciated jasper pendant

Jasper, an opaque microcrystalline variety of chalcedony (mostly SiO₂), with iron-oxide staining and likely brecciation

Goldstone

Man-made glass infused with metallic copper

Iron Meteorite

Iron-Nickel Alloy (Kamacite and Taenite)

Milky quartz

Quartz (silicon dioxide, SiO₂)

Polished brown jasper (likely brecciated or orbicular jasper)

Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide and other mineral inclusions

Blue Obsidian

Volcanic Glass (SiO2 with inclusions)

Ferro-silicate Slag

Industrial Vitrified Slag (High-silica amorphous glass)

Silver (Native Element)

Ag (Argentum) - 90% Silver, 10% Copper alloy in specimen

Blue chalcedony (likely dyed or treated)

Microcrystalline quartz, SiO₂ (chalcedony)

Iron meteorite (likely etched or weathered iron meteorite)

Fe–Ni alloy, predominantly kamacite and taenite; possible ataxite/hexahedrite or coarse octahedrite

Goldstone

Man-made glass containing cuprous oxide

Diamond (in a jewelry setting)

Carbon (C)

Pink Cubic Zirconia (CZ)

Zirconium Dioxide (ZrO2)

Likely iron meteorite fragment

Iron meteorite, probably kamacite–taenite (Fe–Ni alloy)

Bismuth crystal

Bismuth (Bi), artificially crystallized

Green cabochon gemstone, likely nephrite jade

Nephrite jade—interlocking amphibole fibers, chiefly tremolite-actinolite, Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂

Slag

Ferrous Slag (Siliceous industrial waste)

Banded agate cabochon

Microcrystalline quartz (chalcedony), SiO₂

Copper

Native Copper (Cu)

Bismuth Crystal

Bismuth (Bi)

Diamond

Native Carbon (C)

Green Glass Slag

Amorphous Silicon Dioxide (SiO2) with metal oxide impurities

Dzi Bead (Etched Chalcedony)

Cryptocrystalline Quartz (SiO2) with chemical etching

Silver (Native or Alloyed)

Ag (Argentum)

Diamond-set letter “L” jewelry piece

Diamond (crystalline carbon, C) set in a metal mount; the metal is not identifiable from the image

Opalite

Man-made Glass (Synthetic Opalized Glass)

Acrylic or Resin (Synthetic Imitation)

Polymethyl Methacrylate (PMMA) or Polyepoxide

Dalmatian Stone

Dalmatian Jasper (a misnomer for an Aplite with Arfvedsonite spots)

Chakra Stone Tower (Composite Multi-Mineral)

Crystalline Silicon Dioxide composite (SiO2) with various inclusions

Green sea glass (likely slag glass or bottle glass)

Man-made soda-lime silicate glass; not a naturally occurring mineral

Dyed Imperial Jasper (Sea Sediment Jasper)

Silicon Dioxide (SiO2) - Impure Quartz/Chalcedony

Ceramic or Polished Stone Heart (Anthropogenic Material)

Glazed Ceramic (Silicon Dioxide based coating on Alumina Silicate body) or Polished Limestone/Marble (Calcium Carbonate, CaCO3)

Blue sea glass or blue glassy mineral fragment

Uncertain; likely man-made soda-lime glass, not a natural mineral

Green sea glass (likely bottle glass)

Man-made soda–lime silicate glass; not a natural mineral

Titanium Aura Quartz

Titanium-coated Silicon Dioxide (SiO2)

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2AlSi3O10(OH)2)

Silicon Carbide (Carborundum)

Silicon Carbide (SiC) / Moissanite (natural)

Quartz crystal fragment (likely milky quartz)

Quartz, silicon dioxide (SiO₂)

Likely bismuth crystal

Synthetic bismuth (Bi), crystallized from molten metal; not a natural rock-forming specimen

Iron Slag (Industrial Byproduct)

Anthropogenic Vitrification Product/Ferrous Slag

Carnelian cabochon pendant

Carnelian, orange-red chalcedony (microcrystalline quartz, SiO₂)