Synthetic Polymer (Synthetic Material)

Jewelry Chain with Blue and Clear Gemstones (Likely Cubic Zirconia)

Cubic Zirconia (ZrO₂), Silver or White Gold/Platinum Alloy

Blue glassy cabochon, likely blue quartz or synthetic glass

Possibly dyed blue chalcedony/quartz (SiO₂); visual identification is inconclusive

Raw Topaz

Aluminum Silicate Fluoride Hydroxide, Al2SiO4(F,OH)2

Lapis Lazuli

Lapis Lazuli (a rock composed primarily of Lazurite, Sodalite, Calcite, and Pyrite)

Dyed Agate

Agate (Cryptocrystalline Quartz), SiO2

Ruby

Corundum (Al2O3)

Chalcanthite (Likely Synthetic/Lab-Grown)

Hydrated copper(II) sulfate (CuSO4·5H2O)

Sapphire (likely blue synthetic sapphire or blue glass in a ring)

Corundum (Al₂O₃), specifically the blue variety due to trace amounts of iron and titanium impurities. If synthetic, it would still be Al₂O₃.

Diamond (faceted)

Diamond (Pure Carbon, C)

Rutilated Quartz

SiO2 with TiO2 inclusions (Rutile)

Ruby

Corundum (Al2O3 with Chromium traces)

Black rectangular gemstone pendant, likely obsidian or black glass imitation

Most plausibly black obsidian (volcanic glass; SiO₂-rich), though the image cannot exclude synthetic glass or black onyx

Colorless faceted gemstone (most likely synthetic cubic zirconia)

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

Engineered Quartz

Silicon dioxide composite

Black Tourmaline

Schorl (Na(Fe²⁺)₃Al₆(OH)₄(BO₃)₃Si₆O₁₈)

Amethyst

Amethyst (SiO2 - Silicon Dioxide with iron impurities)

3D Printed PLA Elephant (Silk Multi-color)

Polylactic Acid (C3H4O2)n

Amber

Succinite (C10H16O)

Blue quartz (likely dyed or synthetic-treated quartz beads)

Quartz, silicon dioxide (SiO₂)

Textile (Upholstery Fabric)

Woven Polyethylene/Polyester or Cotton Blend

Rough Diamond (Uncut Diamond)

Native Carbon (C)

Rhinestone (or glass crystal)

Silicon dioxide (if glass) / Various

Goldstone (aventurine glass)

Synthetic copper-bearing soda-lime glass; commonly sold as red goldstone

Gemstone-set ring, likely cubic zirconia or diamond

Likely synthetic cubic zirconia (zirconium dioxide, ZrO₂); stones may alternatively be diamond (carbon, C)

Green glassy mineral specimen, likely rough emerald or green fluorite

Tentatively beryl (Be₃Al₂Si₆O₁₈), emerald variety; synthetic/man-made glass cannot be excluded from the photograph

Cubic Zirconia (CZ)

Cubic Zirconium Dioxide (ZrO2)

Cubic Zirconia (CZ)

Cubic Zirconium Dioxide (ZrO2)

Cut colorless gemstone, likely quartz or glass imitation

Most plausibly rock crystal (clear quartz, SiO₂); synthetic glass cannot be ruled out from the image

White chalcedony (possibly milky quartz) cabochon

Chalcedony, microcrystalline SiO₂; appearance may also represent milky quartz or synthetic imitation

Clear faceted gemstone in a gold-colored setting

Likely colorless quartz (rock crystal) or synthetic cubic zirconia; visual identification is inconclusive

Turquoise

Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]

Ornamental ring with likely blue sapphire and diamonds

Blue corundum (sapphire), Al₂O₃; surrounding stones appear diamond, C, set in gold-colored metal

Amber

Succinite (specifically for Baltic amber; general formula C10H16O)

Yellow-orange amber

Fossilized tree resin; amber is an organic mineraloid, not a true mineral

Corundum

Corundum (Al2O3)

Emerald

Beryl (Be3Al2Si6O18), specifically the green variety colored by chromium or vanadium

Azurite-Malachite (often a mixed specimen)

Azurite: Cu3(CO3)2(OH)2; Malachite: Cu2(CO3)(OH)2. The specimen appears to be a natural mixture or intergrowth of these two minerals.

Jade bangle

Likely nephrite jade (fibrous amphibole, Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂); possibly jadeite (NaAlSi₂O₆)

Amber

Succinate (Fossilized Tree Resin)

Diamond (Rough)

Diamond (Carbon, C)

Lapis Lazuli

Lapis Lazuli (a rock composed primarily of Lazurite (Na,Ca)₈[(S,Cl,SO₄,OH)₂|(Al₆Si₆O₂₄)], with varying amounts of Calcite, Pyrite, and Sodalite.)

Opal

Hydrous silicon dioxide (SiO2·nH2O)