Man Made Material (Metal)

Garnet-set butterfly brooch

Likely almandine or pyrope garnet, iron–aluminum silicate (Fe₃Al₂Si₃O₁₂ or Mg₃Al₂Si₃O₁₂)

Green faceted gemstone earrings

Undetermined; possibly green glass or synthetic emerald-type material, rather than identifiable natural emerald

Slag (Industrial Glassy Byproduct)

Anthropogenic silicate byproduct (Slag)

Aura Quartz Bead

Silicon dioxide (SiO2) with metal coating

Beaded stone necklace, likely yellow agate or chalcedony

Chalcedony (microcrystalline quartz, SiO₂); exact stone cannot be confirmed from the photo

Diamond (Cut Gemstone)

Natural Carbon (C)

Gemstone-inlaid bracelet, likely lapis lazuli or dyed howlite

Unconfirmed blue cabochons; lapis lazuli is a rock composed mainly of lazurite, while howlite is Ca₂B₅SiO₉(OH)₅

Ironstone (Limonitic/Hematitic Sandstone)

Ferruginous sandstone (predominantly Fe2O3 and FeO(OH))

Weathered gold-bearing quartz vein fragment

Quartz (SiO₂) with probable iron oxides and sulfide/mineral inclusions

Laterite

Fe2O3 and Al2O3 rich residual rock

Chert (Flint)

Silicon Dioxide (SiO2)

Flint (chert) fragment

Microcrystalline quartz (SiO₂), commonly called flint when dark

Copper

Native Copper (Cu)

Cut faceted gemstone, possibly diamond or quartz

Uncertain from the blurred image; diamond is crystalline carbon (C), while quartz is silicon dioxide (SiO₂)

Faceted orange gemstone stud (possibly citrine)

Unconfirmed; possibly quartz (SiO₂), variety citrine

Weathered basalt (likely vesicular basalt)

Basalt; chiefly plagioclase feldspar, pyroxene, and commonly olivine, with iron-oxide alteration

Sandstone

Arenite (SiO2 based)

Pink faceted gemstone ring (stone uncertain)

Possibly tourmaline or glass; image alone cannot establish identity

Diamond

Native Carbon (C)

Blue cabochon ring stone, likely lapis lazuli or blue chalcedony

Uncertain from image; possible lazurite-bearing lapis lazuli (Na₃Ca(Si₃Al₃)O₁₂S) or cryptocrystalline quartz (SiO₂)

Cobalt Glass Slug (Man-made Glass)

Amorphous Silica with Cobalt Oxide (SiO2 + CoO)

Green aventurine beads

Aventurine quartz, SiO₂, colored green by fuchsite or other inclusions

Blue chalcedony cabochon (likely)

Chalcedony, microcrystalline SiO₂; possibly blue agate or common opal, which cannot be distinguished confidently from the image

Diamond-set gold ring

Diamond (carbon, C; cubic crystal structure), set in a gold alloy

White jade-like beaded bracelet

Unverified; possibly milky quartz or white jade (nephrite jade or jadeite)

Beryl

Beryllium Aluminum Silicate, Be3Al2(SiO3)6

Turquoise inlay ring

Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O

Granite Pebble

Granite (Felsic Plutonic Rock)

Possible iron meteorite

Fe–Ni iron meteorite, possibly an ordinary chondrite or weathered iron-rich specimen

Flint (chert)

Microcrystalline quartz (SiO₂), a variety of chert

Chert

Sedimentary cryptocrystalline silica (SiO2)

Chert (White Chert/Flint)

Microcrystalline Quartz (SiO2)

Chert (variations include Flint)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Flint (gray chert)

Microcrystalline quartz (SiO₂), a variety of chert

Tumbled carnelian

Carnelian, a red-orange variety of chalcedony (microcrystalline quartz, SiO₂)

Granite gravel

Granite, a coarse-grained felsic intrusive igneous rock composed mainly of quartz, feldspar, and mica

Faceted blue gemstone, likely blue topaz or synthetic spinel

Topaz (Al₂SiO₄(F,OH)₂) or synthetic spinel (MgAl₂O₄); image insufficient for certainty

Clear quartz (likely)

Quartz, SiO₂

Red heart-shaped glass bead in a wire-wrapped jewelry charm

Likely colored glass (amorphous silica-based material); the image does not show an identifiable geological specimen

Green cabochon pendant, likely jade

Probably nephrite jade (tremolite–actinolite, Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂); visual identification is uncertain

Diamond jewelry pendant or cluster

Diamond, crystalline carbon (C), likely mounted in metal

Granite

Intrusive Igneous Rock