Heliodor Gemstone
Download Heliodor Gemstone PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Heliodor Gemstone book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages.
Sasol First Field Guide to Gemstones of Southern Africa
This series of natural history field guides has been developed in the hope that young people and anyone with a budding interest in natural history will take up the challenge to learn the secrets of southern Africa's fascinating fauna and flora.
Simon and Schuster's Guide to Gems and Precious Stones
"Simon & Schuster's Guide to Gems and Precious Stones" provides both the connoisseur and the casual collector with a compact, easy-to-use volume describing more than 100 rare varieties of minerals whose beauty and mystery have possessed our imaginations from time immemorial. More than 450 brilliant photographs accompany profiles of each gem, covering such aspects as appearance, physical properties -- density, hardness, refraction -- occurrence, and how to judge quality and value. Additional sections describe the process of cutting gemstones and the techniques professional gemologists use to evaluate a stone's weight and optical properties. Detailed and comprehensive, this book is essential for anyone interested in the study of gems and precious stones.