Sphene is generally considered to be a collector’s gemstone. And with its high refractive
Sphene is generally considered to be a collector’s gemstone. And with its high refractive index and amazing dispersion, Sphene’s remarkable brilliance exceeds even that of a diamond. Green is the most valuable color and this striking 3.61-carat round from Afghanistan is an excellent example. Although relatively unknown to the public and largely ignored by jewelry designers, sphene is a favorite among cutters and connoisseurs for its mesmerizing color and fire. -- source link
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