Tanzania Pearl Gold Diamond 2015 Fashion Jewellery.
By Aamir Mannan.Quality Factor One: Lustre
Lustre is considered the most important quality factor in pearls. Lustre refers both to a pearl's brilliance -- the way its surface reflects light -- and its inner glow: the way it refracts light. A pearl's lustre is generally evaluated in terms of "high" to "low," with grades of "medium" in between.
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