Synthetic (Man Made Glass)

Strawberry Quartz

Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)

Amethyst (faceted gemstone)

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

Polished pink quartz cabochon

Quartz (SiO₂), likely rose quartz or included quartz

Ruby (varieties of Corundum)

Aluminum oxide (Al2O3) with Chromium traces

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)

Colorless faceted gemstone (likely cubic zirconia)

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

Faceted golden beryl (likely heliodor)

Beryl, Be₃Al₂Si₆O₁₈; yellow color from iron impurities

Polished blue-black cabochon, likely blue obsidian or dyed glass-like stone

Indeterminate from image; possible natural obsidian (volcanic glass), commonly SiO₂-rich rhyolitic glass

Turquoise-colored ring stone (possibly turquoise or imitation)

Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; identity cannot be confirmed from the image

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

Hematite cameo or hematine imitation

Hematite (Fe₂O₃); possibly synthetic hematine or black glass

Colorless faceted gemstone, likely cubic zirconia

Cubic zirconia (synthetic ZrO₂), possibly glass or quartz

Blue gemstone ring, likely lapis lazuli

Lapis lazuli: lazurite-rich metamorphic rock, chiefly (Na,Ca)8(AlSiO4)6(S,SO)2, commonly with calcite and pyrite

Fluorite

Calcium Fluoride (CaF2)

Green cabochon gemstone, likely glass-filled or synthetic emerald imitation

Uncertain; possible synthetic emerald (beryl, Be₃Al₂Si₆O₁₈) or green glass

Amethyst jewelry centerpiece

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

Smoky Quartz

Silicon Dioxide (SiO2)

Ruby (Rough/Raw)

Corundum (Al2O3:Cr)

Clear faceted gemstone, likely quartz (rock crystal)

Quartz, silicon dioxide (SiO₂); visual identification is uncertain because the stone is heavily faceted and photographed with flash

Green cabochon gemstone pendant, likely turquoise or dyed green turquoise

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

Tumbled labradorite beads

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

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

Dark blue polished stone pendant

Indeterminate; possibly sodalite, lapis lazuli, or blue slag/glass-like material

Pumice

Pumice (Vesicular volcanic glass)

Small faceted gemstone, likely diamond

Diamond (crystalline carbon, C)

Assorted gemstone jewelry

Mixed natural and synthetic gemstone cabochons and faceted stones; individual species cannot be determined reliably from this image

Obsidian

Volcanic Glass (70% or more SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite

Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite

Cubic Zirconia and Synthetic Ruby Jewelry

Cubic Zirconia (ZrO2) and Synthetic Corundum (Al2O3)

Ruby (Raw Corundum)

Al2O3 (Aluminum Oxide)

Diamond (or Diamond Simulant)

Carbon (C) if diamond, various if simulant

Cubic Zirconia

Zirconium Dioxide (ZrO2)

Chert (Flint)

Silicon dioxide (SiO2)

Sea Glass (Cobalt Blue)

Amorphous Silica (Glass with Cobalt additives)

Sapphire (Blue)

Corundum (Al2O3)

Smoky Quartz

Silicon Dioxide (SiO2)

Diamond (or Cut Gemstone / Cubic Zirconia)

Carbon (C)