Articles
Tanzanite Color Grades: Understanding “VB 6/6”
Fine-colored tanzanite graded as vB 6/6 comprises less than 1% of all production—but what does that grade actually mean? A gemologist explains.
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Tanzanite Color Grades: Understanding “VB 6/6”
Fine-colored tanzanite graded as vB 6/6 comprises less than 1% of all production—but what does that grade actually mean? A gemologist explains.
Read more