Diamonds and diamond grading
By: G. Lenzen ; translated by Patricia B. Lapworth.
Contributors: Lapworth, Patricia B.
Edition: 1st Eng. ed.
Publisher: Butterworths
Published: 1982
Place of publication: London; Boston
Language: eng
Number of pages: 258
Subjects: Diamonds.; Diamond cutting.
Work titles: Diamantenkunde.
Notes: Translation of: Diamantenkunde, published by Kirschweiler, 1979.

Includes bibliographies and index.