The Accord in Round Brilliant Diamond Cutting
By Michael Cowing |
Photo realistic image of today’s Ideal cut diamond Photo realistic image of the Ideal with pavilion cut in the antique ...
Read More Over Grading of Blue Fluorescent Diamonds Summary
By Michael Cowing |
Twenty-five years ago GIA published the results of a human experiment in the observation of diamonds with various amounts of ...
Read More Over Grading of Blue Fluorescent Diamonds Revisited
By Michael Cowing |
Nineteen years ago GIA published the results of a human experiment in the observation of diamonds with various amounts of ...
Read More The Overgrading of Blue-Fluorescent Diamonds
By Michael Cowing |
Michael D. Cowing FGA AGA Certified Gem Laboratory email: michaelgem@gmail.com Abstract: Decades after the establishment in the mid-twentieth century of ultraviolet-free ...
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