Mineral Simulant (Synthetic Glass)

Tumbled Clear Quartz and Citrine Points

Silicon Dioxide (SiO2)

Gemstone ring (stones not reliably identifiable from the image)

Likely faceted yellow stones and clear stones set in a metal band; species and treatments are indeterminate visually

Amethyst cabochon

Quartz, silicon dioxide (SiO₂), purple variety colored mainly by iron impurities and irradiation

Blue glassy mineral specimen, possibly dyed or synthetic

Uncertain; possible blue fluorite (CaF₂), dyed chalcedony, or man-made glass

Blue Quartz / Glass Gemstone Pendant

SiO2 (Silicon Dioxide) or Synthetic Glass

Tiger’s-eye

Chatoyant quartz (SiO₂), commonly pseudomorphic quartz after crocidolite

Faceted quartz crystal sphere (likely rock crystal)

Quartz, silicon dioxide (SiO₂)

Diamond (or Cubic Zirconia simulant)

Carbon (C) or Zirconium Dioxide (ZrO2)

Carved labradorite fish

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

Goldstone

Avventurina (Man-made Glass with Copper inclusions)

Amethyst (Tumbled)

Silicon Dioxide (SiO2) with Fe3+ impurities

Raw ruby (corundum)

Ruby variety of corundum, aluminum oxide (Al₂O₃), colored chiefly by chromium

Red cut gemstone, likely synthetic ruby

Corundum (Al₂O₃); possibly lab-grown ruby or red glass imitation

Red/pink faceted gemstone, likely synthetic ruby or red glass

Corundum (Al₂O₃) if ruby; identity cannot be confirmed visually

Gem-set gold ring

Likely a faceted diamond (carbon, C) set in a gold-alloy ring; the surrounding stones are not identifiable from the image.

Quartz (Druzy / Goldstone Gemstone Cabochon)

Silicon Dioxide (SiO2)

Opalite

Synthetic Glass (Hydrated Crystalline Silicon Dioxide simulation)

Green Fluorite (likely synthetic or heat-treated for jewelry)

Calcium Fluoride (CaF2)

Cut gemstone, likely diamond

Diamond (crystalline carbon, C)

Faceted clear gemstone (likely glass imitation or quartz)

Uncertain; appearance is consistent with colorless quartz (SiO₂), but the strong uniform brilliance may indicate cut glass or cubic zirconia

Diamond ring (likely a faceted clear gemstone)

Diamond, crystalline carbon (C); the setting appears to be gold-colored metal

Opalite-style pendant (likely synthetic glass, not natural opal)

Opalescent glass; commonly sold as “opalite” (not a recognized mineral species)

Silicon

Crystalline Silicon (Si)

Cubic Zirconia (Diamond Simulant)

Zirconium Dioxide (ZrO2)

Red gemstone ring, likely synthetic ruby or red glass; exact stone cannot be confirmed from the image

Ruby (corundum, Al₂O₃) if natural; the setting appears to be silver-tone metal

Opalite

Man-made Glass (Synthetic Opalized Glass)

Goldstone

Aventurine glass (Synthetic glass with copper inclusions)

Fluorite

Calcium Fluoride (CaF2)

Red faceted gemstone, likely synthetic ruby or red glass

Ruby: corundum, aluminum oxide (Al₂O₃), chromium-colored; identity cannot be confirmed visually

Smoky Quartz

Silicon Dioxide (SiO2)

Diamond (Set in jewelry)

Cubic Carbon (C)

Blue Goldstone

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

Smoky Quartz

Silicon Dioxide (SiO2)

Blue Sapphire

Corundum (Al2O3)

Quartz (Smoky Quartz variant)

Silicon Dioxide (SiO2)

Opalite

Man-made Synthetic Glass (Silicon Dioxide with metal additives)

Ruby

Corundum (Al2O3 with Chromium trace)

Decorative opal-like turtle mosaic

Likely imitation or assembled opal material; exact stones cannot be confirmed visually

Howlite

Howlite (Calcium borosilicate hydroxide, Ca2B5SiO9(OH)5)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Polished tiger’s eye

Quartz (microcrystalline SiO₂) with crocidolite-derived iron oxides

Clear-stone silver-tone teardrop earring

The stones may be colorless quartz or glass; the image does not allow reliable identification. Metal setting appears silver-tone.