INDEX
Reading edition
Absorption, 53, 59
Absorption spectra, 59
Achroite, 220, 221
Adularia, 255
Agate, 247
Akbar Shah diamond, 163
Alalite, 272
Albite, 254
Alexandrite, 54, 60, 233
Scientific, 122
Almandine, 60, 214
Oriental, 112, 172
spinel, 112, 204
Amazon-stone, 255
Amber, 83, 298
Amethyst, 239, 242
Oriental, 111, 172, 239
Anatase, 281
Andalusite, 274
Andradite, 216
Anomalous refraction, 47
Anorthite, 254
Apatite, 279
Apophyllite, 290
Aquamarine, 184, 193
Arizona-ruby, 213
Artificial stones, 124
Asteria, 38, 177
Asterism, 38
Australia stones, 154, 174, 182, 195, 213, 216, 227, 232, 252, 288
Austrian Yellow diamond, 165
Aventurine, 240, 241
Axes, Crystallographic, 9
Optic, 49
Axinite, 278
Azure-quartz, 244
Azurite, 287
Balas-ruby, 203
Barnato, Barnett, 145
Baroque, Barrok, pearls, 292
Bastite, 272
Benitoite, 267
Berquem, Louis de, 90, 161
Beryl, 184
Beryllonite, 270
Bezel facet, 92
Biaxial double refraction, 45, 49, 57
Bisectrix, 45, 49
Black diamond, 129
Black lead, 129
Black opal, 249, 250
Black Prince’s ruby, 206
Blister-pearl, 296
Bloodstone, 247
Blue felspar, 255
Blue ground, 143, 147
Blue John, 285
Boart, 103, 129, 133
Bohemian garnet (pyrope), 207, 212
Bone turquoise, 259
Boodt, A. B. de, 132, 213
Borgis, Hortensio, 161
Borneo stones, 154, 170
Bort, v. Boart, 103, 129, 133
Bottle-stone, 284
Boule, 118
Bowenite, 263
Braganza diamond, 170
Brazil stones, 138, 165, 166, 169, 194 et seq., 201, 215, 223, 236, 243, 244, 248, 266, 269, 270, 274
Brazilian emerald, 111, 220, 221
peridot, 221
sapphire, 111, 221
topaz, 111, 197
Brilliant form of cutting, 92
Brilliant, Scientific, 122
Bristol diamonds, 243
Bruting, 100
Burma stones, 178, 205, 223, 227, 263
Button-pearl, 295
Byes, Bywaters, 136, 150
Cabochon form of cutting, 88
Cacholong, 251
Cairngorm, 239
Callaica, callaina, callais, 258
Calcite, 40, 289
California stones, 156, 195, 202, 224, 259, 265, 267, 275
Californite, 264, 275
Cape-ruby, 213
Carat weight, 72, 84
Carbon, 129
Carbonado, 129
Carborundum, 105
Carbuncle, 89, 215
Carnelian, 247
Cascalho, 139
Cassiterite, 281
Cat’s-eye (chrysoberyl), 38, 90, 233
(quartz), 39, 90, 240
(tourmaline), 39, 219
Hungarian, 244
Ceylon stones, 181, 195, 201, 205, 212, 215, 216, 223, 232, 236, 237, 243, 244, 255, 267, 274, 279, 284
Ceylonese peridot (tourmaline), 221
Ceylonite, 204
Chalcedony, 246
Chatoyancy, 38
Chert, 247
Chessylite, 287
Chrysoberyl, 233
Chrysocolla, 288
Chrysolite (chrysoberyl), 233
(peridot), 225
Chrysoprase, 247
Church, Sir Arthur, 61, 211, 231
Cinnamon-stone, 211
Citrine, 239
Cleavage, 80, 100, 149
Close goods, 149
Colenso diamond, 131
Colour, 53
Colour dispersion, 20, 97
Conchiolin, 293
Coral, 298
Cordierite, 266
Cornish diamonds, 243
Corundum, 172
Crocidolite, 39, 240
Crookes, Sir William, 132, 153
Cross facet, 93
Crystal, 6, 7, 8
Rock-, 97
Cubic system, 8
Culet facet, 93
Cullinan diamond, 94, 100, 168
Culture pearls, 297
Cumberland diamond, 164
Cyanite (Kyanite), 79, 273
Cymophane, 234
Darya-i-nor diamond, 162
De Beers diamonds, 167
Demantoid, 216
Density, 63
Deviation, Minimum, 30
Diamond, Characters of, 128
cutting, 90
gauges, 86
Glaziers’, 135
mining, 146
Occurrence of, in—
Borneo, 154
Brazil, 139
German South-West Africa, 155
India, 138
New South Wales, 154
Rhodesia, 155
South Africa, 139
Origin of, 151
-point, 91
-rose, 92
-table, 91
Diamonds, Classification of, 136, 149
Historical, 157
Prices of, 135
Dichroism, 55
Dichroite, 266
Dichroscope, 55
Diffusion column, 65
Diopside, 272
Dioptase, 280
Dispersion, Colour, 20, 24, 97
Disthene, 273
Dop, 102
Double refraction, 28, 40
Doublet, 125
Dresden diamond, 171
Drop-stone, 94
Duke of Devonshire’s emerald, 191
Edwardes ruby, 175
Electrical characters, 82
Emerald, 89, 184
Brazilian, 220, 221
Evening, 225
Oriental, 111, 172
Scientific, 122
Uralian, 216
Emeraldine, 247
Emery, 175
English Dresden diamond, 166
Enstatite, 271
Epidote, 275
Essence d’Orient, 126
Essonite (Hessonite), 211
Euclase, 269
Eugénie diamond, 164
Evening emerald, 225
Excelsior diamond, 167
Extinction, 45
Faceting machine, 105
False topaz, 239
Felspar, 254
Fire, 20, 96
Fire-marble, 289
Fire-opal, 251
Flats, 150
Flêches d’amour, 240
Flint, 247
Floors, 147
Fluor, 285
Frémy, E., 115
Garnet, 207
Green, 271
Gaudin, M. A. A., 115
Gauges, Diamond, 86
Girdle, 92
Glass, 7, 124
Gnaga Boh ruby, 180
Goniometer, 30
Grain, Pearl, 86
Graphite, 129
Greaser, 149
Great Mogul diamond, 161
Great Southern Cross group of pearls, 294
Great Table diamond, 162
Great White diamond, 167
Green garnet, 271
Greenstone, 261
Grossular, 211
Habit, 12
Hardness, 78
Haüynite, 286
Heavy liquids, 64
Hematite, 282
Hessonite, 211
Hexagonal system, 10
Hiddenite, 266
Hope cat’s-eye, 237
chrysolite, 237
diamond, 170
pearl, 294
sapphire, 121
Hornstone, 247
Hungarian cat’s-eye, 244
Hyacinth, 211, 228
Hydrophane, 250
Hydrostatic weighing, 72
Hypersthene, 271
Iceland-spar, 40, 44
Idocrase, 274
Imitation stones, 124
Imperial diamond, 167
Index of refraction, 16
India stones, 137, 181, 194, 215, 243, 244, 248, 290
Indicators, 65
Indicolite, 221
Interference of light, 39, 48
Iolite, 266
Iris, 240
Isle of Wight diamonds, 243
Isomorphous replacement, 13, 19
Jacinth, 211, 228
Jade, 260
Jadeite, 262
Jargoon, 228
Jasper, 247
Jehan Ghir Shah diamond, 163
Jigger, 149
Jubilee diamond, 167
Kauri-gum, 299
Khiraj-i-Alam ruby, 206
Kimberlite, 152
King topaz, 181, 201
Klein’s solution, 67
Koh-i-nor diamond, 137, 158
Kunz, Dr. G. F., 186, 224, 262, 265
Kunzite, 265
Kyanite, 79, 273
Labradorite, 255
La Pellegrina pearl, 294
Lapis lazuli, 286
Lazurite, 286
Lozenge facet, 93
Lumachelle, 289
Lustre, 37
Maacles, Macles, 12, 150
Madagascar stones, 195, 224, 243, 265, 266
Malachite, 287
Malacolite, 272
Manufactured stones, 113
Marble, 289
Mattan diamond, 155, 170
Matura diamonds, 232
Mazarin, Cardinal, 92
Meerschaum, 288
Mêlée, 136
Methylene iodide, 26, 66
Metric carat, 85, 87
Milky-quartz, 240
Minimum deviation, 30
Mocha-stone, 247
Moe’s gauge, 87
Mohs’s scale of hardness, 78
Moissan, Henri, 153
Moldavite, 283
Monoclinic system, 11
Moon of the Mountains diamond, 162
Moonstone, 39, 255
Morganite, 186, 195
Moroxite, 279
Moss-agate, 247
Mother-of-emerald, 240
Mother-o’-pearl, 292
Nacre, 292
Napoleon diamond, 164
Nassak diamond, 163
Negative double refraction, 45
Nephrite, 261
Nicol’s prism, 44
Nizam diamond, 162
Obsidian, 283
Occidental topaz, 111, 239
Odontolite, 259
Off-coloured diamonds, 130
Olivine (demantoid), 216
(peridot), 225
Onyx, 247
Opal, 39, 249
Fire, 251
-matrix, 251
Opalescence, 39
Optical anomalies, 47
Optic axes, 49
Oriental almandine, 112, 172
amethyst, 111, 172
emerald, 111, 172
topaz, 111, 172
Orient of pearls, 292
Orloff diamond, 160
Orthoclase, 254
Orthorhombic system, 11
Pacha of Egypt diamond, 165
Paste, 47, 124
Paul I diamond, 171
Pavilion, 93
Pavilion facet, 93
Pear-drop pearls, 292
Pear-eye pearls, 292
Pearl, 291
grain, 86
imitations, 126
Pendeloque, 94
Peridot, 225
Brazilian, 221
Ceylonese, 221
Peruzzi, Vincenzio, 92
Phenakite, 269
Pigott diamond, 164
Pipes, 152
Pistacite, 275
Pitt diamond, 100, 159
Plasma, 247, 264
Pleochroism, 57
Pleonaste, 204
Pliny, 6, 88, 138, 184, 191, 241, 249
Polar Star diamond, 163
Polarization, 42
Porter-Rhodes diamond, 166
Positive double refraction, 45
Prase, 240, 247
Prehnite, 278
Pycnometer, 75
Pyrites, 282
Pyrope, 212
Quartz, 50, 238
Quoin facet, 93
Rainbow-quartz, 240
Reconstructed stones, 116
Reef, 144
Reflection of light, 14
Refraction of light, 15
Refractive index, 16
Refractometer, 22, 50
Regent diamond, 100, 159
Retgers’s salt, 69
Rhodes, Cecil J., 145
Rhodesia stones, 155, 183, 213, 236
Rhodolite, 62, 214
Rhodonite, 287
Rock-crystal, 97, 239
Rock-drill, 134
Röntgen rays, 83
Rose form of cutting, 91
Rose-quartz, 240
Rospoli sapphire, 182
Rotation of plane of polarization, 50
Rubellite, 220, 223
Rubicelle, 203
Ruby, 98, 110, 172
Balas-, 203
Cape-, 213
Sancy diamond, 161
Sapphire, 98, 110, 172
Brazilian (tourmaline), 221
-quartz, 244
Water- (iolite), 266
Water- (topaz), 201
Sard, 247
Sardonyx, 247
Saussurite, 263
Schorl, 221
Scientific alexandrite, 122
brilliant, 122
emerald, 122
topaz, 121
Scotch topaz, 239
Seed pearls, 294
Serpentine, 289
Setting of gem-stones, 107
Shah diamond, 163
Sheen, 39
Shepherd’s Stone diamond, 163
Siam stones, 180
Siberia and Asiatic Russia stones, 182, 188, 194, 201, 217, 223, 236, 244, 256, 262, 269, 270, 287
Siberite, 221
Siderite, 244
Silver-thallium nitrate, 69
Skew facet, 93
Skill facet, 93
Smoky quartz, 240
Snell’s laws, 16
Soapstone, 288
Sodalite, 286, 287
Sonstadt’s solution, 67
South Africa stones, 139 et seq., 166, 167 et seq., 213, 232, 244, 264, 271
Spanish topaz, 239
Specific gravity, 63
Specific-gravity bottle, 75
Spectroscope, 59
Spectrum, 20, 25
Spectrum, Absorption, 59
Spessartite, 216
Sphene, 276
Spinel, 203
Spodumene, 265
Spotted stones, 149
Star-facet, 92
Star of Africa diamond, 168
Star of Este diamond, 165
Star of Minas diamond, 169
Star of South Africa diamond, 141, 166
Star of the South diamond, 139, 165
Starstones, 38, 177
Steatite, 288
Step form of cutting, 98
Stewart diamond, 166
Strass, 124
Sunstone, 255
Synthetical stones, 113
Syriam, Syrian, garnet, 215
Table facet, 92
Table form of cutting, 91
Tavernier, J. B., 91, 129, 137, 161, 162, 170
Templet facet, 92
Tetragonal system, 9
Thulite, 289
Tiffany diamond, 171
Tiger’s-eye, 39, 240
Timur ruby, 206
Titanite, 276
Topaz, 197
Brazilian, 197
False, 239
Occidental, 111, 239
Oriental, 111, 173
Scientific, 121
Scotch, 239
Spanish, 239
Topazolite, 216
Total-reflection, 18, 21
Tourmaline, 43, 219
Trap form of cutting, 98
Trichroism, 57
Triclinic system, 12
Triplet, 126
Turquoise, 257
Turquoise-matrix, 258
Tuscany diamond, 165
Twinning, 12, 47
Uniaxial double refraction, 45, 48, 57
Uralian emerald, 217
Uvarovite, 218
Variscite, 259
Verdite, 264
Verneuil, A. V. L., 116
Vesuvianite, 274
Victoria diamond, 167
Violane, 287
Wart-pearl, 296
Water (of diamonds), 129
(of pearls), 292
Water-chrysolite, 284
-sapphire (iolite), 266
-sapphire (topaz), 201
White opal, 249
White Saxon diamond, 165
Wollaston, W. H., 133
X-rays, 83
Yellow ground, 143
Zircon, 228
Printed by Morrison & Gibb Limited, Edinburgh