Mineral Simulant (Synthetic Glass)

Man-made Synthetic Material (Not a rock or mineral)

Polyester (Polyethylene terephthalate) / Faux Fur

Smoky Quartz

Smoky Quartz (Silicon Dioxide - SiO2)

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Cubic Zirconia

Cubic Zirconium Dioxide (ZrO2)

Faceted clear gemstone in an ornate ring

Likely colorless cubic zirconia (zirconium dioxide, ZrO₂); the image is insufficient to distinguish it from diamond or glass

Purple cabochon gemstone, likely amethyst or purple sapphire/spinel

Indeterminate from image; possible quartz (SiO₂), corundum (Al₂O₃), or spinel (MgAl₂O₄)

Blue Sapphire

Corundum (Al2O3 with trace Titanium and Iron)

Lava Stone and Chakra Beads

Basalt (with various mineral/synthetic beads)

Amethyst cabochon ring

Amethyst, purple quartz (SiO₂)

Oval faceted gemstone ring, likely diamond

Diamond (crystalline carbon, C), possibly a diamond simulant; identification requires testing

Serpentine

Serpentinite (group of hydrous magnesium iron phyllosilicate minerals)

Colorless faceted gemstone, likely quartz (rock crystal)

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

Limonite (Iron Ore)

Limonite; FeO(OH)·nH2O

Blue Sapphire (likely lab-grown or treated)

Corundum (Aluminum Oxide, Al2O3)

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

Faceted red ruby

Corundum (Al₂O₃), colored red by chromium

Red faceted gemstone, possibly ruby

Corundum (Al₂O₃), if ruby; image alone cannot confirm identity or natural origin

Ruby (rough or poorly polished corundum)

Corundum, Al₂O₃; red gem-quality corundum is ruby

Dyed Alum or Dyed Quartz (Ornamental Crystal)

Silicon Dioxide (SiO2) or Potassium Alum [KAl(SO4)2·12H2O]

Sedimentary Rock with Crafts (Pet Rock)

Sedimentary rock decorated with synthetic materials

Tumbled amethyst

Amethyst, purple quartz (SiO₂)

Parti Sapphire

Corundum (Al2O3)

Rose Quartz

Silicon Dioxide (SiO2)

Diamond (Faceted Colorless)

Diamond (Pure Carbon, C)

Clear quartz sphere

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

Serpentine

Serpentine group, including Antigorite, Lizardite, and Chrysotile (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4

Blue glass-like cabochon, likely dyed or synthetic material

Uncertain; possibly dyed chalcedony, synthetic spinel, or blue glass

Blue gemstone, likely iolite or blue sapphire

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

Diamond ring

Diamond, crystalline carbon (C), set in a likely precious-metal ring

Ruby

Corundum (Al2O3)

Dyed Quartz Pendant

Silicon Dioxide (SiO2) with artificial dye

Diamond ring

Diamond (crystalline carbon, C) set in a metal band; the small stones may be diamonds or simulants.

Emerald and diamond ring

Emerald: beryl, Be3Al2Si6O18, colored green by chromium and/or vanadium; surrounding stones appear to be diamonds, crystalline carbon (C)

Turquoise

CuAl6(PO4)4(OH)8·4H2O

Polished pink corundum (likely treated ruby)

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

Blue gemstone, likely tumbled sapphire or blue spinel

Corundum (Al₂O₃) if sapphire; alternatively spinel (MgAl₂O₄)

Blue-green faceted gemstone, likely turquoise or treated turquoise

Turquoise: hydrated copper–aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O; exact identification is uncertain from the image

Opal-like cabochon ring stone

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

Crackled Quartz (Dyed)

Silicon Dioxide (SiO2)

Blue Goldstone

Aventurine Glass (SiO2 with Co and metallic inclusions)

Blue Sapphire

Corundum (Al2O3)

Red corundum (ruby-colored polished crystal)

Corundum, aluminum oxide (Al₂O₃); red color is typically caused by chromium