Description
A reference guide to gems, semi-precious stones and crystals.
Gemstones and crystals are used for jewelry, industry, lasers and precision technology. Firefly Guide to Gems is a practical, compact guide to the identification and use of precious and semi-precious stones, novelty stones, agates and crystals.
An introduction explains geology, chemistry and gemstone properties in clear and accessible terms. Key aspects of gemstones are explained such as crystal structures and optical and physical properties.
The first section of the book focuses on precious gems in their many forms, with illustrations of priceless jewelry. Practical information includes:
- Fashioning and cutting
- Types and shapes of cut
- Collecting
- Handling and storing gemstones
- Weighing and measuring stones
The second and main section supplies complete descriptions of a wide range of gems, organized by chemical composition, for instance:
- Carbon (diamond)
- Aluminum oxide (saphire and ruby)
- Phosphate (turquoise)
- Silica (opal)
A fascinating profile of each gem is accompanied with color photographs of the raw crystal, common cuts, and finally polished for use in jewelry. At-a-glance charts provide technical details such as refractive index, crystal group, luster, hardness and cleavage for each gem.
Easy-to-read and abundantly illustrated, Firefly Guide to Gems is ideal for collectors and rockhounds.
Author: Cally Oldershaw
Publisher: Firefly Books
Published: 01/01/2009
Pages: 224
Binding Type: Paperback
Weight: 0.74lbs
Size: 7.72h x 5.06w x 0.57d
ISBN13: 9781552978146
ISBN10: 1552978141
BISAC Categories:
- Nature | Rocks & Minerals
- Crafts & Hobbies | Jewelry
About the Author
Cally Oldershaw is a mineralogist and Liaison Officer for the Geological Society of London as well as an examiner for the Gemmological Association of Great Britain.