Mineral Simulant (Synthetic Glass)

Ruby-set gold ring

Ruby (corundum), Al₂O₃ colored red by chromium; mounted in a gold alloy

Diamond or Cubic Zirconia

Carbon (diamond) or Zirconium dioxide (cubic zirconia)

Diamond (or Diamond Simulant)

Native Carbon (C)

Blue sapphire ring

Corundum (aluminum oxide, Al₂O₃), likely heat-treated sapphire

Clear faceted gemstone, likely cubic zirconia

Synthetic zirconium dioxide (ZrO₂), probably cubic zirconia; exact identification requires testing

Colorless faceted gemstone (likely glass or cubic zirconia)

Likely cubic zirconia, ZrO₂; exact identification is uncertain from the photograph

Diamond (or Diamond Simulant)

Carbon (C)

Diamond (or Cut Gemstone / Cubic Zirconia)

Carbon (C)

Colorless faceted gemstone, likely cubic zirconia

Synthetic cubic zirconia (ZrO₂), tentative; possibly diamond or synthetic moissanite

Diamond ring

Diamond, crystalline carbon (C), set in a gold-colored metal ring

Colorless faceted gemstone, likely synthetic cubic zirconia

Cubic zirconia (zirconium dioxide, ZrO₂); natural diamond is a less likely alternative

Pink Cubic Zirconia (CZ)

Zirconium Dioxide (ZrO2)

Diamond (or Cubic Zirconia simulant)

Carbon (C) - Diamond / Zirconium dioxide (ZrO2) - CZ

Faceted colorless gemstone, likely diamond

Diamond, crystalline carbon (C); identity cannot be confirmed from the photo

Mounted clear gemstone, likely cubic zirconia

Cubic zirconia (zirconium dioxide, ZrO₂), synthetic; exact stone cannot be confirmed from the image

Colorless faceted gemstone (most likely synthetic cubic zirconia)

Cubic zirconia, ZrO₂ (likely synthetic); natural alternatives include quartz or diamond

Cubic Zirconia (CZ) Jewelry

Zirconium dioxide (ZrO2)

Diamond

Diamond (Native Carbon, C)

Red gemstone ring, likely ruby or synthetic ruby

Corundum (Al₂O₃), chromium-colored; natural versus synthetic cannot be determined from the photo

Faceted clear gemstone, likely quartz (rock crystal)

Quartz, silicon dioxide (SiO₂); exact identity is uncertain because the strong flash and cut obscure diagnostic features

Colorless faceted gemstone, likely cubic zirconia

Cubic zirconia (synthetic zirconium dioxide, ZrO₂); possibly colorless quartz or laboratory diamond

Diamond ring (likely diamond with gold band)

Diamond, crystalline carbon (C); band appears gold alloy

Violet faceted gemstone, likely synthetic or simulant

Indeterminate from the image; possible violet sapphire (corundum, Al₂O₃), amethyst (quartz, SiO₂), or glass/another simulant

Clear faceted quartz-like gemstone

Probably rock crystal quartz (SiO₂), though the image may show synthetic glass or cubic zirconia

Diamond-set gold ring

Diamond (crystalline carbon, C) set in a gold alloy; the metal and setting are manufactured

Hematite

Iron(III) oxide (Fe2O3)

Faceted transparent gemstone pendant

Likely cubic zirconia (zirconium dioxide, ZrO₂); possibly diamond or synthetic moissanite

Diamond (or Cubic Zirconia / Rhinestones)

Carbon (C) or Zirconium dioxide (ZrO2)

Tanzanite earrings

Tanzanite, blue-violet zoisite (Ca₂Al₃(SiO₄)₃(OH))

Clear faceted gemstone, likely cubic zirconia

Cubic zirconia (synthetic zirconium dioxide, ZrO₂); visual identification is uncertain and diamond or another colorless stone is possible.

Blue Goldstone

Aventurine Glass

Colorless faceted gemstone (likely cubic zirconia)

Cubic zirconia, zirconium dioxide (ZrO₂); possibly synthetic quartz or glass imitation

Cubic Zirconia (Simulated Diamond)

Zirconium Dioxide (ZrO2)

Diamond ring

Diamond, crystalline carbon (C), likely a faceted mounted stone

Colorless faceted gemstone, likely cubic zirconia

Cubic zirconia (zirconium dioxide, ZrO₂); visual confirmation is unavailable

Faceted Gemstone

Unknown transparent mineral, possibly Diamond (C), Cubic Zirconia (ZrO2), Quartz (SiO2), or Glass

Blue gemstone ring, likely sapphire

Corundum, Al₂O₃ (probable blue sapphire); surrounding stones may be diamonds or simulants

Diamond (or high-quality simulant like Cubic Zirconia)

Carbon (C) - Native Element

Gemstone ring (stones not identifiable from image)

Unknown; the ring appears to contain two yellow stones and one colorless stone, possibly faceted gemstones or simulants

Blue sapphire ring

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

Diamond-encrusted microphone-shaped pendant

Diamond (natural or synthetic) set in gold-colored metal; exact stones and metal cannot be confirmed visually

Diamond (Faceted)

Carbon (C)