This handbook updates jewellery professionals and serious diamond buyers on the new developments in diamond grading, treatments, synthetic diamonds, fancy-colour diamonds and lab certificates. Using close-up photographs, it shows how to make visual judgements about clarity, transparency, cut quality and brilliance. The handbook also discusses how gem labs are incorporating brightness, size, scintillation and pattern into their cut grades, and it provides tips on detecting treatments and man-made diamonds. Topics include: quality evaluation; diamond recutting; branded diamonds; antique cuts and jewellery; diamond treatments; fancy-colour diamonds; synthetic diamonds; light performance; fluorescence; and, lab reports. -- amazon.com
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