Authors: Adolf Peretti, Christopher P. Smith, Robert C. Kammerling, Alice S. Keller, Kenneth V. Scarratt, Nguyen Dang Khao, Saverio Repetto
Published in: Gems & Gemology
Authors: Adolf Peretti, Christopher P. Smith, Robert C. Kammerling, Alice S. Keller, Kenneth V. Scarratt, Nguyen Dang Khao, Saverio Repetto
Published in: Gems & Gemology