For the first time ever, tanzanite (blue zoisite), found only in the Merelani Hills of Tanzania, has been offered to sightholders in a De Beers–like manner. The sight took place April 16, through TanzaniteOne, the mining company that owns the rights to most of the tanzanite in Merelani. Seven tanzanite firms were invited to participate. Each received a box of graded rough specifically predetermined for the particular company.
Among the seven sightholders that would allow JCK to publish their activity are Rare Multicolor Gems, STS Jewels, Tanzanite International, K.L. Tambi & Company, the Tanzanite Co., and Color Jewels.
Ashish Dangayach of Color Jewels, New York, is elated. "It's quite an accomplishment being a sightholder," says Dangayach. "This is the first time there has been anything like this in the color-gemstone trade."
Sunil Agrawal of STS Jewels, New York, points to
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