Gemstone

Quartz (Druzy / Goldstone Gemstone Cabochon)

Silicon Dioxide (SiO2)

Quartz-rich pegmatite (likely quartz with feldspar and mica)

Granite/pegmatite; chiefly SiO₂ quartz, with feldspar and possible mica or chlorite

Aura Rose Quartz

SiO2 (Silicon Dioxide with Titanium/Gold coating)

Diamond

Carbon (C)

Amethyst (Faceted Gemstone)

Silicon Dioxide (SiO2) with iron impurities

Sunstone

Oligoclase (Plagioclase Feldspar) with hematite or copper inclusions

Amethyst and Citrine (Ametrine Mix)

Silicon Dioxide (SiO2) with Fe3+ impurities

Sunstone (Feldspar)

(Ca,Na)((Al,Si)2Si2O8) with inclusions of Hematite or Goethite

Turquoise in Matrix

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

Tanzanite

Blue Zoisite (Ca2Al3(SiO4)3(OH))

Ruby and Sapphire Cluster Ring

Corundum (Al2O3)

Carnelian

Carnelian (Cryptocrystalline Quartz, SiO2)

Red Coral (Precious Coral)

Corallium rubrum (Calcium Carbonate, CaCO3)

Red Garnet (likely Almandine)

Almandine (Fe3Al2(SiO4)3)

Peridot

Olivine ((Mg, Fe)2SiO4)

Melo Melo Pearl (or Golden Chalcedony / Yellow Jasper Sphere)

Non-nacreous calcium carbonate pearl (or SiO2 - Silicon Dioxide)

Amethyst

Quartz (Silicon Dioxide with iron impurities), SiO2

Garnet

Almandine (Fe3Al2(SiO4)3) or Pyrope (Mg3Al2(SiO4)3)

Blue sapphire

Corundum, aluminum oxide (Al₂O₃), colored blue mainly by iron and titanium

Carved nephrite jade Buddha

Nephrite jade, an interlocking amphibole aggregate dominated by tremolite–actinolite, Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂

Likely blue sapphire ring

Corundum (Al₂O₃), likely sapphire; surrounding stones may be diamonds or colored gems

Peridot

Olivine (Magnesium Iron Silicate), (Mg, Fe)2SiO4

Colorless faceted gemstone, likely quartz

Quartz (SiO₂), tentatively identified from the image

Emerald in Matrix

Emerald (Beryllium Aluminum Silicate), Be3Al2(SiO3)6

Turquoise

Hydrate phosphate of copper and aluminium, CuAl6(PO4)4(OH)8·4H2O

Amethyst Geode

Amethyst/Purple Quartz (SiO2)

Sapphire

Corundum (Al2O3)

Green cabochon gemstone, likely aventurine or dyed chalcedony

Indeterminate from image; possible quartz variety (SiO₂), including aventurine quartz or chalcedony

Green Quartz (Prasiolite variant or Aventurine)

Silicon Dioxide (SiO2)

Amethyst

Quartz (Silicon Dioxide, SiO2)

Turquoise and Spiny Oyster (Heishi style beads)

Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Spondylus (Spiny Oyster shell)

Amber

Succinite (a fossilized organic resin)

Quartz Crystal Cluster in Matrix

Silicon Dioxide (SiO2)

Rose quartz jewelry

Quartz, silicon dioxide (SiO₂), pink variety

Diamond ring

Diamond, crystalline carbon (C)

Mixed gemstone jewelry collection

Likely amethyst, rose quartz or pink tourmaline, smoky quartz, and dark tourmaline/onyx; exact identifications are uncertain from the image

Almandine Garnet

Almandine (Fe3Al2Si3O12)

Amethyst

Quartz (Silicon Dioxide with Iron impurities), SiO2

Amethyst

Silicon Dioxide (Quartz variety), SiO2

Unakite

Altered Granite

Rose Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)