A Key To Precious Stones - Hardcover

Spencer, Leonard James

Hardcover

ISBN 10: 1258108429 ISBN 13: 9781258108427

Publisher: Literary Licensing, LLC, 2011

Synopsis

Originally published in 1937, this book deals primarily with precious stones as mineral products and is written from a mineralogical point of view. It gives a background to the principles of mineralogy and uses technical terms, but aims to put these into popular language, making this an easy to use guide. Contents Include: GENERAL PRINCIPLES: Introduction Colour, Lustre and Brilliancy Density and Hardness, Heaviness and Durability Forms of Crystals Optical characters of Precious Stones, Their Action on Light Chemical Composition: What Precious Stones are Made of Geological Occurrence and Origin of Precious Stones Mining of Precious Stones Cutting and Polishing Gems: Forms of Cutting Imitation Gems and Artificial Gem-Stones . Nomenclature of Gems: Names of Gem-Stones and Minerals DESCRIPTIVE PORTION: Diamond - Corundum and it's Colour Varieties, Ruby and Sapphire - Spinel and Chrysoberyl - Beryl and Topaz The Garnet and Tourmaline Groups - Zircon and Olivine - The Quartz Group - Opal and Silica-Glass - Jade (Nephrite and Jadeite) - Lapis-Lazuli and Turquoise. Miscellaneous Gem-Stones - Gem Materials of Organic Origin: Amber, Jet, Pearls, Coral.

About this edition

• Publisher: Literary Licensing, LLC
• Publication date: 2011
• ISBN 10: 1258108429
• ISBN 13: 9781258108427
• Binding: Hardcover
• Number of pages: 262