Product details
100% Natural – Not treated in any way.
Beautiful Center-stone for an engagement Ring.
Gem with High Luster and Good Clarity.
Large Sizes are Extremely Rare!
A Gem of Lasting Beauty.
Refractive Index: 1.718 (-.006, +.044)
Hardness: 8
Chemical Comp: MgAl2O4
Density: 3.60 (-.03, +.30)
Crystal Group: Cubic
Spinel Many famous rubies in crown jewels around the world are actually spinels. The most famous is the Black Prince’s ruby, and the The Timor Ruby.Spinel was recognized as a distinct gem variety only in the late 19th century through hardness and X-ray tests. Until then were mixed with Rubies due to similarity in color and brilliance.




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