Gemstone

Leopard Skin Jasper

Microcrystalline Quartz (SiO2) with mineral impurities

Multicolored gemstone ring, likely set with tourmaline or mixed colored stones

Unidentifiable from the image; possible tourmaline (complex borosilicate) and/or other colored gemstones in a metal setting

Garnet (Almandine)

Almandine Fe3Al2(SiO4)3

Citrine

Silicon Dioxide (SiO2)

Almandine Garnet in Matrix

Almandine, Fe3Al2(SiO4)3

Faceted clear gemstone in a metal setting

Unidentified transparent faceted gem; possibilities include quartz (SiO₂), topaz (Al₂SiO₄(F,OH)₂), or glass—the image is insufficient for identification.

Peridot

Olivine ((Mg, Fe)2SiO4)

Green gemstone in a jewelry setting (possibly emerald or green glass)

Not identifiable from the image; if natural emerald, beryl (Be₃Al₂Si₆O₁₈)

Fairburn Agate

Cryptocrystalline Quartz (SiO2) with inclusions

Lake Superior Agate

Silicon dioxide (SiO2)

Lake Superior Agate

Silicon Dioxide (Chalcedony)

Likely lepidolite-bearing pegmatite

Lithium-mica pegmatite, chiefly lepidolite (K(Li,Al)₃(Si,Al)₄O₁₀(F,OH)₂) with quartz and feldspar

Weathered quartz-rich rock, possibly granite or quartzite

Indeterminate; likely quartz–feldspar aggregate, potentially granitic, or recrystallized quartzite

Blue Topaz

Aluminum silicate fluoride hydroxide (Al2SiO4(F,OH)2)

Smoky Quartz

Silicon Dioxide (SiO2)

Rhodonite

Manganese silicate (Mn,Fe,Mg,Ca)SiO3

Turquoise

CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminum)

Sunstone

Plagioclase Feldspar (Na,Ca)(Al,Si)4O8

Turquoise

CuAl6(PO4)4(OH)8·4H2O

Gemstone-set silver jewelry piece

Likely mixed faceted gemstones in a silver-colored metal setting; stones may include sapphire, ruby/garnet, and yellow sapphire or citrine, but the image is insufficient for species-level identification.

Red glassy mineral specimen, likely synthetic ruby or red spinel

Most consistent with synthetic corundum (Al₂O₃, ruby) or synthetic spinel (MgAl₂O₄); exact identification requires testing

Diamond (or Cubic Zirconia simulant)

C (Carbon) or ZrO2 (Zirconium Dioxide)

Emerald (cut gemstone)

Beryl, Be₃Al₂(SiO₃)₆; green color typically from chromium and/or vanadium

Emerald (Faceted Gemstone)

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Multi-stone gemstone ring

Likely faceted blue topaz or synthetic blue stone with clear stones, possibly cubic zirconia or diamond; metal setting appears silver-colored alloy

Yellow tumbled stone, likely citrine or yellow chalcedony

Uncertain from the image; possibilities include quartz (SiO₂) or chalcedony (microcrystalline SiO₂)

Moonstone

Orthoclase (Potassium Aluminum Silicate), Formula: (K,Na)AlSi3O8

Rhodonite

Manganese silicate (Mn,Fe,Mg,Ca)SiO3

Blue cabochon gemstone, likely blue sapphire

Corundum (Al₂O₃), colored blue by trace iron and titanium

Polished red gemstone beads, possibly garnet

Unconfirmed; likely almandine garnet (Fe₃Al₂(SiO₄)₃)

Gold and Diamond Jewelry

Native Gold (Au) and Diamond (C)

Red gemstone ring, likely garnet or synthetic ruby

Possibly almandine garnet (Fe₃Al₂(SiO₄)₃) or corundum/ruby (Al₂O₃); image alone cannot distinguish

Biotite-bearing granite or granitic gneiss

Quartz–feldspar–biotite aggregate; likely granite, possibly weathered gneiss

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Aventurine (likely Green Aventurine)

Silicon Dioxide (SiO2) with mineral inclusions

Tanzanite

Blue Zoisite (Ca2Al3(SiO4)(Si2O7)O(OH))

Chalcedony

Silicon Dioxide (SiO2)

Chrysoprase

Chalcedony (SiO2)

Almandine Garnet

Fe3Al2(SiO4)3

Chakra Crystal Pendant

Mixed Quartz and Chalcedony (SiO2)

Colorless tourmaline (probably elbaite)

Elbaite, Na(Li₁.₅Al₁.₅)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)

Turquoise bead bracelet

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