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300
INDEX.
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Apatite, 283 Aphrizite, 276 Aquamarine, 229
Chrysolite. 229 Arizona Ruby, 248 Artificial gem production, pioneers
of, 78 precious stones, 70 Asteria, 183 Asteriated Cordierite. 240
Corundum, 196
Quartz, 152
Ruby, 190
Sapphire, 195 Asterism, 31
in
Garnet. 244 Attachment of crystals, 49 Augite, 218 Authorities, early,
2 Aventurine Oligoclase, 215 Orthoclase, 212 Quartz, 159 Axe Stone, 224
Axes of crystals, 47 Axinite, 272 Azure Stone, 240
B.
Balas Ruby, 198 Banded Agate, 168 Birkenfeld, Agate industry of, 65 Beryl, 228 Beryllus, 228. 253 Bezils, 53
Bishop's
Stone, 153 Black Garnet, 249 Bleached Agate, 169 . 'Bloodstone, 165
Blue ground, 108 Blue John, 144 Bohemian Garnet, 246 Ruby, 155
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Bort. 94. 103
applications of. 131 Bottle stone. 254 Brazilian Diamond localities. 113
Emerald. 277
Pebble, 150
Ruby. 266
Sapphire, 266, 276
Topaz,
266 Brecciated Agate, 174 Brilliant cut, 51, 53 Briolette, 55 Bristol
Diamonds, 150 Brittleness of gems. 41 Brutage, 57 Burning. 76. 263
Burnt Topaz. 264 Burton's preparation of Diamond. 87
C. CachaLong. 13, 166
Opal. 181 Cairngorm, 156 Calcedonius (Dioptase), 161 Calcite, 205
origin of, 11 Callais (of Pliny), 284 Callina (of Pliny). See Olivine.
253 Cameos, detection of artificial. 69 Cape Chrysolite, 274
liuby. 247 Carbonado. 103, 117
applications of, 131 Carborundum, 63 Carbunculus. 198, 243
Alabandicus, 248 Carnelian, 162
origin of, 14 Agate, 169 Cat Sapphire, 1S4
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