Synthetic Or Natural Fiber

Turquoise cabochon

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

Clear Quartz (Faceted) / White Sapphire / Goshenite

Silicon Dioxide (SiO2) / Aluminium Oxide (Al2O3)

Corundum (Pink Sapphire / Ruby)

Al2O3 (Aluminum Oxide)

Tumbled basalt

Basalt; fine-grained mafic volcanic rock, chiefly plagioclase and pyroxene with possible olivine and magnetite

Lapidary Wax (imitation/wax model)

Hydrocarbon wax blend with colorant (imitating Lapis Lazuli/Emerald)

Polished tiger’s-eye

Quartz variety, SiO₂, with crocidolite-derived iron inclusions

Faceted clear gemstone, likely quartz or glass imitation

Most likely quartz (SiO₂); exact identification requires refractive-index and hardness tests

Red faceted gemstone jewelry setting

Likely synthetic ruby or red spinel centerpiece with colorless accent stones; exact identification requires gemological testing

Aquamarine in Onyx / Blue Topaz Pendant

Beryl (Be₃Al₂Si₆O₁₈) or Topaz (Al₂SiO₄(F,OH)₂)

Hematite cameo or hematine imitation

Hematite (Fe₂O₃); possibly synthetic hematine or black glass

Polished pink corundum (likely treated ruby)

Corundum, aluminum oxide (Al₂O₃); ruby when red-to-pink from chromium

Quartz (Smoky Quartz variant)

Silicon Dioxide (SiO2)

Heart-shaped faceted gemstone pendant

Likely yellow quartz (citrine) or synthetic yellow stone, set in metal with small clear accent stones

Blue Sapphire

Corundum (Al2O3) with traces of Iron and Titanium

Yellow faceted gemstone, likely citrine or yellow beryl

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

Diamond

Carbon (C)

Red gemstone ring, likely synthetic ruby or garnet

Ruby: corundum (Al₂O₃); possible alternative: almandine garnet (Fe₃Al₂(SiO₄)₃)

Diamond jewelry pendant or cluster

Diamond, crystalline carbon (C), likely mounted in metal

Tumbled basalt or dark volcanic rock

Basalt; chiefly plagioclase feldspar, pyroxene, and commonly olivine or iron oxides

Diamond (or Diamond Simulant)

Carbon (C) or Cubic Zirconia (ZrO2)

Emerald (green gemstone in a jewelry setting)

Beryl, Be₃Al₂(SiO₃)₆; green color commonly from chromium and/or vanadium

Moonstone ring

Moonstone, a feldspar variety (typically orthoclase or adularia; KAlSi₃O₈)

Colorless faceted gemstone, likely cubic zirconia

Cubic zirconia (synthetic ZrO₂), possibly glass or quartz

Cubic Zirconia (Jewelry Setting)

Cubic Zirconia (ZrO2)

Diamond (or Diamond Simulant)

Carbon (C)

Green cabochon gemstone pendant, likely turquoise or dyed green turquoise

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

Blue Goldstone

Synthetic Aventurescent Glass (Cobalt-doped soda-lime glass)

Diamond (or Diamond Simulant)

Native Carbon (C)

Costume Jewelry Gemstones (Emerald-imitation and semi-precious beads)

BeCuAl6Si6O18 (Beryl structure), frequently simulated by glass or synthetic spinel

Dyed Quartzite

Metamorphosed Quartz (SiO2) with synthetic pigment

Dyed Agate

Silicon Dioxide (SiO2) with synthetic dyes

Goldstone (Synthetic Aventurescence Glass)

Cuprous Aventurescent Glass (Silicon Dioxide with Copper inclusions)

Smoky Quartz

Silicon Dioxide (SiO2)

Tumbled agate or chalcedony pebble

Microcrystalline quartz (SiO₂), likely agate/chalcedony

Cut gemstone ring, likely diamond

Diamond (carbon, C), faceted gemstone; exact stone identification is uncertain from the image

Ruby

Corundum (Al2O3 with Chromium)

Ruby (varieties of Corundum)

Aluminum oxide (Al2O3) with Chromium traces

Blue faceted gemstone, likely synthetic sapphire or blue glass

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

Opal-like cabochon ring stone

Likely common opal (hydrated amorphous silica, SiO₂·nH₂O); exact material uncertain from the photograph

Opalite

Man-made opalescent glass (SiO2 + metal oxides)

Likely diamond accent

Diamond (crystalline carbon, C)

Ruby

Corundum (Al2O3 with Chromium traces)