Synthetic Glass (Often Categorized As A Simulated Mineral)

Ring with an Orange Inlay

N/A (Man-made object)

Man-made Polished Porcelain Tile (Artificial Geologic Lookalike)

Fused Silicate Ceramic with Alumina (Synthetic Kaolinite derivative)

Synthetic Convention Badge (Plastic/PVC)

Polyvinyl Chloride (PVC) / Polycarbonate

Rough Emerald (Beryl)

Emerald (Be3Al2(SiO3)6 with Cr/V impurities)

Synthetic Blue Aura Quartz

Silicon Dioxide (SiO2) with Metallic Infusion

Synthetic Resin (Artificial Specimen)

Polyurethane or Polyester Resin

Blue Dyed Agate

Cryptocrystalline Quartz (SiO2)

Blue-green gemstone ring, likely treated turquoise or synthetic/treated beryl

Indeterminate from image; possibilities include turquoise (CuAl6(PO4)4(OH)8·4H2O), apatite, or treated beryl

Blue Tiger's Eye

Riebeckite (crocidolite variety)

Opal

Hydrated Amorphous Silica (SiO2·nH2O)

Hematite

Iron(III) oxide (Fe2O3)

Tumbled dalmatian jasper (likely)

Microcrystalline quartz/chalcedony with black amphibole or aegirine inclusions; commonly sold as “dalmatian jasper”

Anthracite Coal

Anthracite (Carbon-based organic sedimentary rock transitioned to metamorphic)

Smoky Quartz

Silicon Dioxide (SiO2)

Ruby

Corundum (Al2O3 with Chromium trace elements)

Opal

Hydrated amorphous form of silica (SiO2·nH2O)

Clear faceted gemstone in a gold-colored setting

Likely colorless quartz (rock crystal) or synthetic cubic zirconia; visual identification is inconclusive

Diamond (or Diamond Simulant)

Native Carbon (C)

Asphalt (Bituminous Concrete)

Bituminous Concrete / Pavement

Blue glassy cabochon, likely blue quartz or synthetic glass

Possibly dyed blue chalcedony/quartz (SiO₂); visual identification is inconclusive

Ruby cabochons

Corundum, aluminum oxide (Al₂O₃), colored red by chiefly chromium

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Blue Sapphire

Corundum (Al2O3)

Pearl-embellished decorative cross

Pearl (biogenic calcium carbonate, predominantly aragonite) with rhinestone-mounted glass or synthetic gemstones

Diamond ring

Diamond, crystalline carbon (C), likely a faceted mounted stone

Amber (likely opaque/burnished amber)

Fossilized plant resin; primarily polymerized terpenoid resin (succinite-type amber)

Dyed Blue Agate

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Sapphire

Corundum (Al₂O₃) with trace elements causing color variations.

Diamond (likely rough or included fragment)

Diamond, crystalline carbon (C), cubic crystal system

Hematite

Iron(III) oxide (Fe2O3)

Diamond

Pure Carbon (C)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Ruby

Corundum (Al2O3) with Chromium traces

Acrylic or Resin (Synthetic Imitation)

Polymethyl Methacrylate (PMMA) or Polyepoxide

Iron-stained Quartz

Silicon Dioxide with Iron Oxide (SiO2 with Limonite/Hematite impurities)

Emerald

Beryl (variety Emerald), Be3Al2Si6O18 with Cr and/or V

Polished blue chalcedony or glass-like quartz specimen

Chalcedony (microcrystalline SiO₂), possibly treated or synthetic; exact identification requires testing

Obsidian

Obsidian (Volcanic Glass)

Shale with Vein Infillings

Shale (a fine-grained clastic sedimentary rock). The veins could be Calcite (CaCO3), Quartz (SiO2), or other minerals.

Green Slag Glass

Cullet (Amorphous Silicon Dioxide with impurities)

Purple Fluorite Octahedron

Fluorite (Calcium Fluoride, CaF2)

Polished green-and-black banded cabochon (likely malachite imitation or dyed agate)

Uncertain; possible malachite (Cu₂CO₃(OH)₂), banded agate (SiO₂), or man-made glass