Faceted Gemstone look-alikes
Unknown Gemstone (possibly Sapphire or Spinel based on color and cut)
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Open the appSeveral rocks and minerals can be confused with Faceted Gemstone. Below are documented look-alikes and the features that tell them apart. Never rely on a single feature. Always check multiple properties.
Similar rocks to compare
Sapphire
Al2O3 (Corundum)
Also known as: Blue Corundum
Spinel
MgAl2O4
Also known as: Magnesium Aluminum Oxide
Blue Topaz
Al2SiO4(F,OH)2
Also known as: Aluminum Silicate Fluoride Hydroxide
Tanzanite
Ca2Al3(SiO4)3(OH)
Also known as: Blue Zoisite
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