Man Made Material (Metal)

Bismuth Crystal

Bismuth (Bi)

Note on Image Identification: Textile

N/A (Anthropogenic material)

Diorite (River Pebble)

Intermediate plutonic igneous rock

Diamond

Carbon (C)

Diamond

Carbon (C)

Chert (Arrowhead/Artifact Fragment)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Coquina

Bioclastic Limestone

Faience and Carnelian in Egyptian Revival Jewelry

Faience (quartz frit) and Carnelian (chalcedony, SiO2)

Diamond

Native Carbon (C)

Tumbled aqua glassy mineral specimen, likely chrysocolla or turquoise imitation

Uncertain from image; possible chrysocolla (hydrated copper aluminosilicate, variable composition) or dyed/man-made glass

Gold-bearing quartz or ironstone fragment

Quartz (SiO₂) with possible native gold and iron oxides

Titanium Aura Quartz (Aura Quartz)

Titanium-coated Silicon Dioxide (SiO2)

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

Dolerite (Diabase)

Dolerite / Diabase

Small metallic mineral fragment

Indeterminate; possibly galena, hematite, magnetite, or metallic meteorite fragment

Blue Sapphire (Synthetic or Man-made Glass Imitation)

Corundum (Al2O3) if natural; Lead-glass or Spinal if synthetic

Diamond (in a jewelry setting)

Cubic Carbon (C)

Polished orange chalcedony pendant

Chalcedony, microcrystalline quartz (SiO₂), likely orange carnelian or orange agate

Dyed Quartz Geode

Silicon Dioxide (SiO2) with artificial pigment

Likely slate

Slate, a fine-grained metamorphic rock composed mainly of mica-group minerals and quartz

Slag Glass

Silicon dioxide with impurities

Polished greenstone/serpentine pebble (probable)

Serpentinite, dominated by serpentine-group minerals (lizardite/chrysotile); possible accessory olivine or chlorite

Polished blue calcite sphere (tentative identification)

Calcite, CaCO₃; blue color generally results from trace impurities or inclusions

Quartzite

Quartzite

Clear faceted gemstone in a gold-colored setting

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

Moissanite

Silicon Carbide (SiC)

Chert (Flint)

Silicon dioxide (SiO2)

Hematite Beads

Hematite (Fe2O3)

Slag (Industrial By-product)

Anthropogenic Vitreous Silica/Iron Silicate

Mica-rich metamorphic rock, likely schist

Quartz–mica schist; commonly quartz with muscovite and/or biotite mica

Amber (likely a small polished amber piece)

Natural fossil resin; amber is an organic mineraloid, not a crystalline mineral. The image alone cannot confirm authenticity.

Synthetic Blue Aura Quartz

Silicon Dioxide (SiO2) with Metallic Infusion

Faceted colorless gemstone, likely cubic zirconia or diamond

Cubic zirconia (zirconium dioxide, ZrO₂) or diamond (carbon, C)

Moss Agate

Chalcedony (SiO2) with inclusions of manganese or iron oxides

Pallasite Meteorite

Pallasite (ST-class)

Gemstone Ring

N/A - Set piece of jewelry, likely Amethyst or Garnet with Diamond or CZ

Quartz-bearing Pegmatite with Metallic Sulfides

Pegmatite / Quartz-Feldspar Matrix with Pyrite and Mica

Turquoise bracelet

Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O

Blue gemstone ring, likely blue topaz or synthetic blue spinel

Likely topaz (Al₂SiO₄(F,OH)₂) or synthetic spinel (MgAl₂O₄); identification is uncertain from the image

Turquoise jewelry beads/earrings

Turquoise, hydrated copper–aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O; possibly reconstructed or imitation turquoise

Ruby (set in a ring; possibly synthetic or imitation)

Corundum, Al₂O₃; red color is typically caused by chromium

Diamond (Cut Gemstone)

Natural Carbon (C)