Title: Too fundamental to be "secrets"
Product review: Nice for first-timers, lacking depth in more detailed areas-light-leakage, brilliance, scintillation, ymmetry,etc. It's easy to find a diamond with VG for polish but seldom the case for symmetry. Did not mention trends in diamond cutting, such as Eightstars, Heart and Arrow diamonds. Spends too many pages on mounting and setting. Subject title-ruthenium missing in discussion of Platinum on page 78. Typos in page 16,17,69.
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