Gemmology

Front Cover
Butterworth-Heinemann, 2005 - Science - 324 pages
1 Review
Since Gemmology was first published, thousands of readers have used it to gain an in-depth appreciation of the science of gemmology, its history and practice. This third edition has been revised to cover, in particular, This third edition has been revised to cover, in particular, new HPHT diamond enhancement methods and beryllium lattice diffusions techniques for corundum as well as the low pressure high temperature CVD synthesis of thick film diamond
It includes details of the Gemmological Associations recently introduced Foundation course, and provides examination notes.
* Contains essential information for the Gem-A exams
* Fully updated to cover recent advances and instruments
* An invaluable resource for gemmologists worldwide
  

What people are saying - Write a review

User Review - Flag as inappropriate

Great book, a pity that Peter Read fails ... No rating available
... to acknowledge that David Minster of Pretoria South Africa was the inventor of the LED light source as an alternative to the
sodium light source as mentioned in his article on alternate light ... more Ľ sources for refractometers on the Journal of Gemmology in 1979, and in in his book, Gemmological instruments (first edition) - fatal omission Peter
David Minster
 

Contents

1 Introduction
1
2 The geological origin occurrence and locality of gemstones
11
3 The chemical composition of gemstones
22
4 Crystallography
29
5 Cleavage parting and fracture
43
6 Hardness
48
7 Specific gravity density and relative density
54
8 Colour lustre and sheen
67
13 The hand lens microscope and Chelsea filter
141
14 Gemstone enhancement
155
15 Synthetic gemstones and gemstone simulants
168
16 Identifying inorganic gemstones and their synthetic counterparts
189
17 Identifying inorganic gemstone simulants
212
18 Identifying organic gem materials and their simulants
223
19 The fashioning of gemstones
243
20 Practical gemstone identification
263

9 Reflection and refraction
79
10 Polarization and pleochroism
105
11 Spectroscopy
115
12 Luminescent electrical and thermal properties of gemstones
127
Appendices
267
Index
309
Colour plate
325
Copyright

Common terms and phrases

References to this book

Bibliographic information