Man Made Material (Jewelry, Metal Alloy)

Copper

Native Copper (Cu)

Polished brecciated jasper pendant

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

Silver (Native Element)

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

Polished brown jasper (likely brecciated or orbicular jasper)

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

Bismuth Crystal

Bismuth (Bi)

Iron meteorite (likely etched or weathered iron meteorite)

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

Likely iron meteorite fragment

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

Diamond

Native Carbon (C)

Green cabochon gemstone, likely nephrite jade

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

Dzi Bead (Etched Chalcedony)

Cryptocrystalline Quartz (SiO2) with chemical etching

Banded agate cabochon

Microcrystalline quartz (chalcedony), SiO₂

Sea Glass

Man-made silicate glass weathering product

Acrylic or Resin (Synthetic Imitation)

Polymethyl Methacrylate (PMMA) or Polyepoxide

Slag

Ferrous Slag (Siliceous industrial waste)

Chakra Stone Tower (Composite Multi-Mineral)

Crystalline Silicon Dioxide composite (SiO2) with various inclusions

Dalmatian Stone

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

Titanium Aura Quartz

Titanium-coated Silicon Dioxide (SiO2)

Green Aventurine

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

Diamond ring

Diamond (crystalline carbon, C)

Dyed Imperial Jasper (Sea Sediment Jasper)

Silicon Dioxide (SiO2) - Impure Quartz/Chalcedony

Iron Slag (Industrial Byproduct)

Anthropogenic Vitrification Product/Ferrous Slag

Green Glass Slag

Amorphous Silicon Dioxide (SiO2) with metal oxide impurities

Silicon Carbide (Carborundum)

Silicon Carbide (SiC) / Moissanite (natural)

Ceramic or Polished Stone Heart (Anthropogenic Material)

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

Quartz crystal fragment (likely milky quartz)

Quartz, silicon dioxide (SiO₂)

Tumbled milky quartz pebble

Quartz (silicon dioxide, SiO₂), opaque-to-translucent milky variety

Carborundum (Silicon Carbide)

Silicon carbide (SiC)

Carnelian cabochon pendant

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

Aura Quartz (Titanium-coated Quartz)

Silicon Dioxide (SiO2) with metallic vapor coating

Bismuth Crystal

Bismuth (Bi)

Bismuth Crystal

Bismuth (element symbol Bi, atomic number 83)

Opalite

Man-made Glass (Synthetic Opalized Glass)

Green Aventurine

SiO2 (Silicon Dioxide with Fuchsite inclusions)

Native Gold Flake

Gold (Au)

Silver (Jewelry form)

Native Silver (Ag)

Green sea glass (likely slag glass or bottle glass)

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

Green Quartz / Chrysoprase / Sea Glass

Silicon Dioxide (SiO2)

Green Obsidian Sphere (man-made glass)

Vitreous Silica with Chromium/Iron additives

Tumbled milky quartz (likely)

Quartz, silicon dioxide (SiO₂)

Crackle Agate / Dyed Quartz

SiO2 (Silicon Dioxide)

Cubic Zirconia (Diamond Simulant)

Zirconium Dioxide (ZrO2)

Rounded graywacke or sandstone cobble

Lithified clastic sandstone; likely quartz–feldspar–lithic grain aggregate in a silica or calcite matrix