Synthetic Or Natural Fiber

Black onyx or black spinel ring stone

Likely chalcedony (SiO₂), variety black onyx; possibly synthetic spinel or glass

Citrine

Citrine (Silicon Dioxide, SiO2)

Dalmatian Stone

Dalmatian Stone (Felsic Igneous Rock)

Polished blue chalcedony (likely blue quartz/chalcedony)

Microcrystalline quartz, SiO₂; blue color commonly from inclusions or coloration

Blue Sapphire

Corundum (Al2O3)

Colorless faceted gemstone, likely cubic zirconia

Cubic zirconia (synthetic ZrO₂), possibly glass or quartz

Strawberry Quartz (Hematoid Quartz)

Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)

Tumbled opalite (likely synthetic glass)

Opalite; typically man-made opalescent soda-lime glass, not a recognized mineral species

Polished Tiger’s Eye

Tiger’s eye quartz; SiO₂ with parallel crocidolite-derived inclusions

White Opal

Hydrated Amorphous Silica (SiO2·nH2O)

Painted River Rock

Polished fluvial clast with acrylic/synthetic pigment coating

Blue Opal Inlay (Simulated/Lab-created)

Hydrated Amorphous Silica (SiO2·nH2O) with polymer resin

Emerald

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Polished tiger’s-eye pebble

Quartz (SiO₂), chatoyant fibrous variety; commonly partly altered crocidolite

Likely citrine or yellow glass imitation in a silver-tone bracelet

Citrine: quartz, SiO₂; exact material cannot be confirmed visually

Smoky Quartz

Silicon Dioxide (SiO2)

Dyed Agate

Chalcedony (SiO2)

Blue Sapphire (in a faceted jewelry setting)

Corundum (Al2O3) with trace Iron and Titanium

Amethyst cabochon

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

Smoky Quartz

Smoky Quartz (Silicon Dioxide, SiO2)

Ruby (Corundum)

Corundum (Aluminum Oxide with Chromium), Al2O3:Cr

Pink Dyed Agate

Silicon Dioxide (SiO2) with synthetic pigment

Blue gemstone, likely iolite or blue sapphire

Iolite (cordierite, Mg₂Al₄Si₅O₁₈) or corundum (sapphire, Al₂O₃)

Goldstone (Brown)

Aventurine Glass (Silicon Dioxide infused with Copper crystals)

Dyed Agate

Silicon Dioxide (SiO2) - variety Chalcedony

Polished blue chalcedony (likely blue quartz/chalcedony cabochon)

Chalcedony, cryptocrystalline SiO₂; possibly dyed or treated common quartz

Red Tiger's Eye

Silicified Crocidolite (Quartz pseudo-morph after Crocidolite), SiO2

Dyed Crackle Quartz

Silicon Dioxide (SiO2) with synthetic dye

Emerald

Beryl (Be3Al2(SiO3)6) with trace Chromium/Vanadium

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)

Blue Dyed Agate

Cryptocrystalline Quartz (SiO2)

Amethyst (Resin Carving/Orgonite)

Silicon Dioxide (SiO2) with iron impurities

Strawberry Quartz

Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)

Opalite

Synthetic Glass (Simulated Moonstone/Opal)

Blue Cracked Quartz (Dyed Fire Crackle Quartz)

Silicon Dioxide (SiO2) with synthetic dye

Hematite

Iron(III) oxide (Fe2O3)

Concrete Paver (Artificial Cementitious Rock)

Hydrated Portland Cement Aggregate

Sodium Polyacrylate (Superabsorbent Polymer)

Sodium Polyacrylate [-CH2-CH(COONa)-]n

Orange cabochon gemstone, likely amber or amber-like resin

Natural amber: fossilized plant resin (organic mineraloid), commonly succinite; exact identification requires testing

Diamond (Faceted)

Carbon (C)

Smoky Quartz

Silicon Dioxide (SiO2)