Opals and Sapphires: How to work, mine, class, cut, polish, and sell them

Idriess gives you a practical guide, from personal experience, on how to work, mine, class, cut, polish, and sell opals and sapphires.

Publisher: Angus and Robertson
Date Published: 1967
Book Condition: Good hardcover in a fair dust cover showing tears and chips to edges and surface wear. Previous owner’s inscription on the front endpaper. Some minor spotting to front and back boards. A very small repaired closed tear to the bottom of the title page, otherwise, a clean and tidy copy internally.