Mineraloid Like Synthetic Material

Raw ruby (likely corundum)

Corundum, Al₂O₃; red color caused mainly by chromium

Rock Crystal (Clear Quartz)

Silicon dioxide (SiO2)

Ferruginous Slag (Iron Smelting Byproduct)

Anthropogenic Vitreous Silicate (often containing Fayalite: Fe2SiO4)

Tumbled turquoise cabochon

Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O

Tumbled black stone, likely black obsidian

Obsidian — volcanic glass, primarily SiO₂

Green glassy cabochon, likely dyed or synthetic material

Uncertain; possibly green obsidian, chrysoprase, or synthetic glass

Tourmalinated Quartz

Crystalline Silicon Dioxide with Schorl inclusions (SiO2 + NaFe3Al6(BO3)3Si6O18(OH)4)

Limonite with Quartz (Gossan)

Hydrated iron(III) oxide-hydroxide mixture (FeO(OH)·nH2O) with Silicon Dioxide (SiO2)

Faceted yellow-green gemstone, likely peridot

Olivine, typically forsterite-rich (Mg₂SiO₄)

Smoky Quartz

Silicon Dioxide (SiO2)

Clear quartz sphere

Quartz (silicon dioxide, SiO₂), likely rock crystal or low-grade milky quartz

Smoky Quartz

Silicon Dioxide (SiO2)

Obsidian

Obsidian (volcanic glass)

Mahogany Obsidian Arrowhead

Volcanic Glass with Hematite/Magnetite inclusions (Amorphous Silicon Dioxide)

Strawberry Quartz

Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)

Red gemstone ring, likely ruby or synthetic ruby

Corundum (Al₂O₃), chromium-colored; the image alone cannot confirm whether it is natural or synthetic

Opalite

Man-made opalescent glass (SiO2 + metal oxides)

Smoky Quartz

Silicon Dioxide (SiO2)

Red faceted gemstone, likely synthetic ruby

Corundum (Al₂O₃); ruby is red chromium-bearing corundum

Jadeite and Mixed Gemstones (Ruby, Sapphire, Emerald)

Jadeite (NaAlSi2O6), Corundum (Al2O3), Beryl (Be3Al2(Si6O18))

Ruby in matrix (likely ruby-bearing corundum)

Corundum, aluminum oxide (Al₂O₃), chromium-bearing variety

Acrylic or Resin (Synthetic Imitation)

Polymethyl Methacrylate (PMMA) or Polyepoxide

Colorless faceted gemstone, likely quartz (rock crystal)

Quartz, silicon dioxide (SiO₂); exact identification cannot be confirmed from the photograph

Obsidian

Volcanic glass (silica-rich rhyolitic melt; primarily SiO₂)

White Opal

Hydrated Silica (SiO2·nH2O)

Black faceted gemstone, likely spinel or black tourmaline

Most plausibly black spinel (MgAl₂O₄); visually similar possibilities include schorl tourmaline (NaFe₃Al₆(BO₃)₃Si₆O₁₈(OH)₄) or synthetic glass

Clear faceted gemstone, likely quartz (rock crystal)

Quartz, silicon dioxide (SiO₂); exact identity cannot be confirmed from the glare-heavy image

Emerald (likely faceted gemstone)

Beryl, Be₃Al₂Si₆O₁₈; green color typically from chromium and/or vanadium

Pearl (in a decorative hair comb setting)

Calcium carbonate (CaCO3) primarily as Aragonite, bonded with Conchiolin

Blue topaz pendant

Topaz (Al₂SiO₄(F,OH)₂), likely treated blue topaz

Cubic Zirconia (Jewelry Setting)

Zirconium Dioxide (ZrO2)

Wood Beads (Palmwood/Ebony)

Various species for wood, but often refers to woods like Palmwood (e.g., Borassus flabellifer) or Ebony (Diospyros spp.) for their distinctive grain and hardness.

Yellow-orange faceted gemstone, likely citrine or yellow topaz

Citrine: quartz, SiO₂; yellow topaz: Al₂SiO₄(F,OH)₂

Smoky Quartz

Silicon Dioxide (SiO2)

Polished green-and-black banded cabochon (likely malachite imitation or dyed agate)

Uncertain; possible malachite (Cu₂CO₃(OH)₂), banded agate (SiO₂), or man-made glass

Bismuth crystal

Bismuth (Bi), commonly laboratory-grown

Man-made Green Quartz (Lab-grown or Treated)

Silicon Dioxide (SiO2) with artificial coloration

Obsidian

Volcanic Glass (Amorphous Silicon Dioxide)

Schungite

Carbon-rich mineraloid (Amorphous carbon)

Shungite

Carbon-rich mineraloid (Amorphous carbon)

Blue Sapphire

Corundum (Al2O3)

Probable amber fragment

Amber (fossilized plant resin; chiefly amorphous organic resin, commonly dominated by succinite)