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Guide to Gems: Illustrated Guide to the Identification, Properties and Use of Gemstones - Softcover

Oldershaw, Cally

 
9781552978146: Guide to Gems: Illustrated Guide to the Identification, Properties and Use of Gemstones
Softcover
ISBN 10: 1552978141 ISBN 13: 9781552978146
Verlag: FIREFLY BOOKS LTD, 2009

Inhaltsangabe

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.

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Über die Autorin bzw. den Autor

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.

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Verlag
FIREFLY BOOKS LTD
Erscheinungsdatum
2009
Sprache
Englisch
ISBN 10 
1552978141
ISBN 13 
9781552978146
Einband
Taschenbuch
Anzahl der Seiten
224
Kontakt zum Hersteller
Nicht verfügbar
Verantwortliche Person
Terminal Video
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