Mineral (Man Made Composite)

Polished tiger iron

Tiger iron; interlayered hematite, jasper, and crocidolite-quartz (often riebeckite)

Green glassy mineral specimen, likely rough emerald or green fluorite

Tentatively beryl (Be₃Al₂Si₆O₁₈), emerald variety; synthetic/man-made glass cannot be excluded from the photograph

Likely graphite-rich schist or graphite-bearing metamorphic rock

Graphite (C) in a mica/quartz-rich matrix; exact rock name requires testing

Synthetic Resin (Artificial Specimen)

Polyurethane or Polyester Resin

Green Aventurine

Quartz (SiO2) with Fuchsite inclusions

Goldstone (Brown)

Aventurine glass

Polished black-and-golden tourmaline

Schorl–dravite tourmaline, commonly represented by black schorl over brown dravite

Ruby ring

Corundum (Al₂O₃), red variety colored mainly by chromium

Red cabochon gemstone, likely carnelian or red agate

Cryptocrystalline quartz (chalcedony), SiO₂

Yellow Sapphire (Raw)

Corundum (Al2O3)

Luminous Stone (Glow-in-the-dark Synthetic/Man-made Stone)

Strontium Aluminate tinted glass or resin (Crystalline silicate/oxide mix)

Diamond

Carbon (C)

Unakite

Unakite (Altered Granite composed of Orthoclase KAlSi3O8, Epidote Ca2(Al, Fe)3(SiO4)3(OH), and Quartz SiO2)

Polished pietersite-like brecciated jasper

Silicified chalcedony/jasper aggregate, primarily SiO₂; exact material uncertain from image

Weathered conglomeratic river cobble

Polymictic conglomerate or breccia, likely matrix-supported

Larimar

Pectolite

Asphalt (Bituminous Concrete)

Bituminous mix / Anthropogenic conglomerate

Yellow cabochon gemstone, likely citrine or yellow glass imitation

Quartz (SiO₂), if natural citrine; visual evidence is insufficient to exclude man-made glass or resin

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

Crackle Glass (Simulated Gemstone)

Amorphous Solid (SiO2)

Diamond (in a jewelry setting)

Carbon (C)

Fossilized Shell Fragment / Mother of Pearl

Calcium Carbonate (CaCO3) - Aragonite/Calcite biomineral

Fossilized turtle shell or carapace

Testudines indeterminate; shell mainly fossilized calcium-carbonate bone (apatite)

Blue turquoise cabochon

Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; likely dyed or stabilized, flower-shaped polished piece

Tiger Iron

Tiger Iron (composite of Tiger's Eye, Red Jasper, and Hematite)

Unakite

Epidotized Granite

Rough Corundum (Sapphire/Ruby mixture)

Corundum (Aluminum Oxide, Al2O3)

Colorless faceted gemstone, likely glass or cubic zirconia

Uncertain; possible cubic zirconia (ZrO₂) or quartz (SiO₂), but the image may show a man-made simulant

Colorless faceted quartz-like gemstone

Likely quartz (SiO₂), though the appearance may also indicate man-made glass or cubic zirconia

Granite

Granite (Phaneritic Quartz-Feldspar-Mica composite)

Blue slag glass / industrial smelter slag

Man-made iron-rich silicate slag; composition variable, commonly Fe–Ca–Mg–Al silicates with glassy phases

Aura Quartz / Rainbow Aura Quartz

Silicon Dioxide (SiO2) with metallic vapor coating

Goldstone

N/A (Synthetic Glass with Copper Inclusions)

Corundum (Pink Sapphire / Ruby)

Al2O3 (Aluminum Oxide)

Raw turquoise-bearing rock

Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O, likely in a limonite/matrix host

Blue-green faceted gemstone, likely turquoise or treated turquoise

Turquoise: hydrated copper–aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O; exact identification is uncertain from the image

Chalk

Calcium Carbonate (CaCO3)

Que Sera Stone (Llanite with Feldspar and Quartz)

Rhyolite with blue quartz and pink orthoclase (Llanite-type quartz porphyry)

Polished banded agate slab or agate-look decorative stone

Microcrystalline quartz (chalcedony), SiO₂; exact identification is uncertain from the image

Moissanite

Silicon Carbide (SiC)

Diamond

Carbon (C)

Marble (Sculpted Statue)

Metamorphic Limestone (composed primarily of Calcite, CaCO3)