Mineral (Metal)

Polished carnelian agate pendant

Microcrystalline quartz (SiO₂), orange chalcedony; likely banded agate

Slag (Industrial By-product)

Anthropogenic Vitreous Silica/Iron Silicate

Granite

Intrusive Igneous Rock (composed primarily of quartz, alkali feldspar, and plagioclase)

Granite

Intrusive Igneous Rock

Copper Ore with Chalcocite

Copper sulfide (Cu2S) with associated copper-bearing minerals

Chalcopyrite (or Pyrite Ore)

CuFeS2 (Copper Iron Sulfide)

Slag (Industrial Byproduct)

Ferrous/Non-ferrous Silicate

Granite

Intrusive Igneous Rock

Small cylindrical mineral/stone fragment

Undetermined; the image is insufficient for reliable mineral identification

Polished red jasper pendant

Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides

Ring with an Orange Inlay

N/A (Man-made object)

Orgonite Pyramid (containing Amethyst and mixed minerals)

Silicon Dioxide (SiO2) in synthetic resin

Unidentified metallic mineral or metal-like specimen

Indeterminate from image; possibly galena (PbS) or a metallic sulfide

Granite

Felsic intrusive igneous rock

Black beaded bracelet, likely black onyx or glass

Possibly chalcedony (microcrystalline quartz, SiO₂); the beads may instead be man-made glass

Silver (Native Element)

Ag (Argentum) - 90% Silver, 10% Copper alloy in specimen

Red gemstone ring, likely ruby or synthetic ruby

Corundum (Al₂O₃), chromium-colored; the image alone cannot confirm whether it is natural or synthetic

Granite

Intrusive Igneous Rock

Lepidolite

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

Polished brecciated jasper pendant

Silica-rich jasper (microcrystalline quartz, SiO₂), brecciated and cemented by silica or iron-rich material

Marble

Recrystallized Calcite (CaCO3)

Pyrite

Iron Disulfide (FeS2)

Beaded gemstone bracelet

Indeterminate; likely small polished mineral beads, possibly turquoise or dyed stone, with metal and glass components

Opalite

Synthetic glass / Opaque silicious glass

Metal Alloy (Jewelry)

Not a naturally occurring rock or mineral; likely a metal alloy for jewelry. Possible compositions include sterling silver (92.5% silver, 7.5% copper), or other silver/gold alloys.

Granite

Intrusive igneous rock composed mainly of quartz, alkali feldspar, and plagioclase

Lepidolite

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

Iron meteorite fragment

Fe-Ni meteorite, likely an iron meteorite or stony-iron fragment

Clear faceted gemstone in an ornate metal bracelet

Unidentified transparent faceted stone; possibilities include quartz (SiO₂), zircon (ZrSiO₄), or glass—image alone cannot distinguish them

Serpentine

(Mg,Fe)3Si2O5(OH)4

Granite

Plutonic Igneous Rock

Colorless Quartz (Rhinestone)

Silicon Dioxide (SiO2)

Olivine

(Mg,Fe)2SiO4

Granite

Intrusive igneous rock

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Bauxite

Bauxite (Al2O3·2H2O mixed with iron oxides)

Red faceted gemstone ring

Likely synthetic ruby or red spinel; exact identification requires testing

Bauxite

Bauxite (Al(OH)3, AlO(OH), AlOOH)

Bauxite

Bauxite (Al(OH)3, AlO(OH))

Green aventurine pendant

Quartz variety, SiO₂, colored mainly by fuchsite or other chromium-bearing mica inclusions

Slag (Industrial)

N/A (Anthropogenic Slag)

Granite

Felsic intrusive igneous rock