Man Made Material (Metal)

Serpentinite

Serpentinite (Hydrated magnesium iron silicate)

Serpentinite

Serpentinite (Hydrated magnesium iron silicate)

Chert (possibly a worked stone flake)

Microcrystalline quartz, SiO₂

Bismuth Crystal

Bismuth (Bi)

Diamond

Carbon (C)

Diamond

Carbon (C)

Slag

Industrial Silicate Slag

Dyed Dragon Vein Agate

Silicon Dioxide (SiO2) with artificial pigment

Diorite (River Pebble)

Intermediate plutonic igneous rock

Gold-bearing quartz or ironstone fragment

Quartz (SiO₂) with possible native gold and iron oxides

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

Faceted clear gemstone in a gold-tone ring

Likely colorless quartz (SiO₂); the image does not establish the stone identity, and glass or another gem is possible

Green faceted gemstone pendant, likely green quartz

Quartz (SiO₂), possibly prasiolite or green-treated quartz

Brick veneer, likely manufactured from clay-rich shale

Fired clay brick; chiefly aluminosilicate minerals, commonly mullite and glassy silicate phases after firing

Diamond-set gold ring

Diamond (carbon, C) in a gold alloy setting; the image does not establish the stone’s identity or authenticity

Tumbled green fluorite

Fluorite (calcium fluoride, CaF₂)

Diamond

Native Carbon (C)

Flint (chert)

Microcrystalline quartz (SiO₂), commonly called chert or flint

Small brown rock fragment; exact identification uncertain

Unidentified fine-grained lithic fragment

Likely jade and pink gemstone jewelry

Green material may be jadeite (NaAlSi₂O₆) or nephrite (Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂); pink beads are unidentified, possibly quartz or coral

Blue Sapphire (Synthetic or Man-made Glass Imitation)

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

Chert (Arrowhead/Artifact Fragment)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Likely native silver-bearing ore or metallic slag-like specimen

Uncertain from the photograph; possible native silver (Ag), but identification requires testing

Pearl necklace

Pearl, primarily aragonite (CaCO₃) and conchiolin

Likely slate

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

Polished orange chalcedony pendant

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

Polished banded agate pendant

Agate, microcrystalline quartz (SiO₂), a chalcedony variety

Turquoise bead bracelet

Turquoise, hydrated copper–aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O (bead material may be stabilized or dyed)

Slag Glass

Silicon dioxide with impurities

Diamond-set gold ring

Diamond (carbon, C) in a gold-alloy setting; the stone may be a diamond or a diamond simulant

Titanium Aura Quartz (Aura Quartz)

Titanium-coated Silicon Dioxide (SiO2)

Polished greenstone/serpentine pebble (probable)

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

Diamond (in a jewelry setting)

Cubic Carbon (C)

Small metallic mineral fragment

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

Inlaid turquoise and red-stone earrings

Likely turquoise (CuAl₆(PO₄)₄(OH)₈·4H₂O) with an unidentified red inlay; the image does not establish the materials

Chert (Flint)

Silicon dioxide (SiO2)

Dolerite (Diabase)

Dolerite / Diabase

White chalcedony (likely moonstone or milky quartz) earrings

Probably chalcedony, microcrystalline SiO₂; exact identification is uncertain from the image

Chert (flint), brown variety

Microcrystalline quartz (SiO₂)

Lepidolite

K(Li,Al)3(Al,Si,V)4O10(F,OH)2

Quartzite

Quartzite

Gemstone Ring

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