Gemmology

Cover
Butterworth-Heinemann, 2005 - 324 Seiten
This edition has been completely revised to cover the latest methods of gem enhancement and identification, as well as the most up-to-date test instruments and laboratory techniques.

Im Buch

Inhalt

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
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Verweise auf dieses Buch

Gemstones of the World
Walter Schumann
Eingeschränkte Leseprobe - 2006

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