GemmologyButterworth-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. |
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 |
309 | |
Colour plate | 325 |
Andere Ausgaben - Alle anzeigen
Häufige Begriffe und Wortgruppen
Absorption spectrum alexandrite amber atoms bands beryl blue calcite carats carbon Chapter Chelsea filter cleavage colourless Composition contain corundum critical angle Crystal system Cubic detected di-iodomethane diamond simulant Dispersion double refraction electrons elements Figure fluoresce flux-melt former USSR Fracture garnet gem materials Gem-A gemmological gemstone glass green hardness heat heavy liquids hexagonal identification immersed inclusions instrument jadeite layers lens light source Luminescence Lustre LW UV magnification method microscope minerals moissanite Monoclinic Myanmar natural stone opal opaque optic sign Orthorhombic oxide pavilion facets pink plane Pleochroism polariscope polished prism Prismatic produced quartz reflected refraction and optic Refractive index refractometer rutile sapphire shadow edge Specific gravity specimen spectroscope spinel strontium titanate surface SW UV symmetry synthetic diamonds synthetic emeralds synthetic rubies synthetic spinel table facet temperature topaz tourmaline translucent transparent Trigonal twinning variety Verneuil visible Vitreous wavelength weight X-ray yellow zircon