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International grading authority swiftly catches 6.18 carat stone intended to resemble previously certified natural diamond By: Diamond World News Service | | Reference: 25642   The International Gemological Institute (IGI), the world’s largest independent gemological laboratory, recently analyzed and graded a 6.18 carat round brilliant-cut, loose stone and established it was a lab-grown diamond at its Thailand location. The stone was submitted for verifi...

Opsydia unveils customisable Nano ID and Loupe ID features for laboratory-grown and natural diamond trades The UK-based diamond security innovator has moved to classify its world-leading sub-surface identifiers by visibility, resulting in ‘Nano’ and ‘Loupe’ ID features for the trade. By: Diamond World News Service | | Reference: 25421   Leading diamond security specialist, Opsydia, has unveiled new classifications for its s...