TOLKOWSKY, MARCEL. DIAMOND DESIGN London: E. & F. N. Spon, Ltd., 1919. 104pp. Sinkankas states "This is the first treatise to establish a mathematical basis for the cutting of diamond faceted gems....A classic in lapidary work and now quite rare."
TOLKOWSKY, MARCEL. DIAMOND DESIGN London: E. & F. N. Spon, Ltd., 1919. 104pp. Sinkankas states "This is the first treatise to establish a mathematical basis for the cutting of diamond faceted gems....A classic in lapidary work and now quite rare."
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