Mineral (Synthetic Glass)

Amethyst (faceted gemstone)

Quartz, silicon dioxide (SiO₂), purple variety colored mainly by iron-related defects

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Blue Quartz / Glass Gemstone Pendant

SiO2 (Silicon Dioxide) or Synthetic Glass

Smoky Quartz

Silicon Dioxide (SiO2)

Turquoise cabochon or turquoise-bearing material

Turquoise, hydrated copper aluminum phosphate — CuAl₆(PO₄)₄(OH)₈·4H₂O

Polished tiger’s eye

Quartz (microcrystalline SiO₂) with crocidolite-derived iron oxides

Cubic Zirconia

Zirconium dioxide (ZrO2)

Strawberry Quartz

Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)

Colorless faceted gemstone, likely glass or quartz

Uncertain; possibly quartz (SiO₂), but the strong uniform brilliance and apparent molded/faceted form may indicate leaded glass or cubic zirconia

Blue stone cabochon, likely lapis lazuli or dyed stone

Lapis lazuli: lazurite-rich rock, chiefly (Na,Ca)₈(AlSiO₄)₆(S,SO)₂; exact identification is uncertain from the image

Red gemstone ring, possibly synthetic ruby or red glass

Unidentified red stone; ruby is corundum (Al₂O₃), but the image cannot confirm its identity

Amethyst jewelry centerpiece

Amethyst, purple quartz (SiO₂), likely set with colorless diamonds or other gems

Blue faceted gemstone, likely sapphire

Corundum (Al₂O₃), likely blue sapphire; identity cannot be confirmed from the photograph alone

Cubic Zirconia

Zirconium Dioxide (ZrO2)

Blue glassy mineral specimen, possibly blue topaz or aquamarine

Tentatively topaz (Al₂SiO₄(F,OH)₂) or beryl/aquamarine (Be₃Al₂Si₆O₁₈); identification is limited by severe image blur

Goldstone

Aventurine glass (Synthetic glass with copper inclusions)

Yellow faceted gemstone, likely citrine or yellow beryl

Quartz (SiO₂), if citrine; beryl (Be₃Al₂Si₆O₁₈), if heliodor

Blue Sapphire

Corundum (Al2O3)

Smoky Quartz

Silicon Dioxide (SiO2)

Faceted blue gemstone ring, likely synthetic spinel or glass; identity uncertain

Possibly synthetic blue spinel (MgAl₂O₄) or laboratory sapphire (Al₂O₃); the clear side stones may be cubic zirconia or glass

Black spinel bead strand

Spinel, magnesium aluminum oxide (MgAl₂O₄)

Opalite

Man-made Glass (Synthetic Opalized Glass)

Hematite cameo or hematine imitation

Hematite (Fe₂O₃); possibly synthetic hematine or black glass

Blue Goldstone

Aventurine glass (Synthetic borosilicate glass with cobalt and metallic inclusions)

Emerald

Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities

Tiger’s eye

Quartz (SiO₂), fibrous pseudomorph after crocidolite

Smoky Quartz

Silicon Dioxide (SiO2)

Goldstone (Brown)

Aventurine Glass (Silicon Dioxide infused with Copper crystals)

Smoky Quartz

Silicon Dioxide (SiO2)

Tumbled labradorite beads

Labradorite, a calcium-rich plagioclase feldspar (approximately (Ca,Na)(Al,Si)₄O₈)

Green cabochon gemstone pendant, likely turquoise or dyed green turquoise

Probably turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; exact identification requires testing

Ruby (in costume jewelry context)

Corundum (Al2O3) with Chromium impurities

Opalite

Synthetic Glass (Simulated Moonstone/Opal)

Colorless faceted gemstone, likely cubic zirconia

Cubic zirconia (synthetic ZrO₂), possibly glass or white sapphire

Colorless faceted gemstone, likely cubic zirconia or diamond

Uncertain from image; cubic zirconia (ZrO₂) is a common diamond simulant, while diamond is crystalline carbon (C)

Ruby (or potential synthetic/imitation)

Corundum (Al2O3)

Silicon Carbide (Carborundum)

Silicon Carbide, SiC

Likely weathered pebble or mineral fragment

Indeterminate; possibly quartz-rich stone, iron-stained feldspar, or a small chert fragment

Rough Citrine Quartz

Silicon Dioxide (SiO2) with ferric iron impurities

Red cabochon gemstone ring, likely synthetic ruby or red glass

Possibly corundum (Al₂O₃, chromium-colored); identity cannot be confirmed from the image

Diamond

Natural Diamond (Carbon, C)

Ruby (varieties of Corundum)

Aluminum oxide (Al2O3) with Chromium traces