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Gemstones of the World Издательство: Sterling, 2007 г Твердый переплет, 272 стр ISBN 1402740166 Язык: Английский инфо 12501i.

Переводчики: Daniel Shea Nicole Shea Gemstones of the World is the single, cornerstone volume that every hobbyist, jeweler, jewelry maker, and rockhound needs And this updated edition contains a new аюьбгchapter on the treatment of gemstones, expanded information on what's "New on the Market", and 400 additional stones More than 1,500 full-color photos showcase each precious and semiprecious stone in its rough, natural, polished, and cut renditions Each entбмпдьry offers complete information on the gemstone's formation, structure, physical properties, and characteristics, along with the best methods of working, cutting, and polishing it There are even full treatments of lesser-known gems; a special section on rocks as precious stones; and organic gem materials Charts and tables (including the "double fraction" figures that experts want) help collectors identify unknown gemstones and check for genuineness Формат: 13 см x 20 см бсрыц4 edition, newly revised & expanded Автор Вальтер Шуман Walter Schumann.


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