Diamond Grading with Bells and Whistles

Electronic diamond-grading machines are becoming a staple at the counters of more and more jewelers, especially now that manufacturers have added consumer-grabbing features. Retailers can put on a high-tech show when selling a diamond and give consumers more confidence in making their selection. The devices are particularly useful for non-gemologist jewelers dealing with knowledgeable customers. The key manufacturers – Sarin Technologies, which makes a diamond-proportion meter; Gran Computer Industries and Austron Corp., makers of color-grading units; and Adamas Gemological Laboratory, which makes the high-priced, high-tech Adamas Advantage – are turning their attention from the diamond industry to retailers. One reason is simply that retailers represent a much bigger market for their machines. Manufacturers say about half of their sales go to retail jewelers. A sales tool. The B

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