PAGE.
Charles I., engraved Diamond of ... ... 36—38
Charles the Bold, cut Diamonds of ... ... 21
Church, Prof., on Turquoise ......... 221
---------on Dichroism ... ... ... ... 319
---------on the Spectroscope ... ... ... 319
---------on ZircoiTs ... ... ... .... 319
Chrysoberyl ... ... ... ... ... 211—253
Chrysolite................... 286
---------Oriental ... ... ... ... ... 253
Chrysoprase ... ... ... ... ··· 255
---------artificial colour of ... ... ... 51
Cinnamon Stone (Essonite) ... .. ,... 263
Circular Agate ............... 236
Citrine (Yellow Quartz)...... ... ... 291
Classification of Stones ... ... ... ... 305
Cleavage of Diamonds ............ 25
Clouds in Stones ... ... ... ... 43
Coloured Diamonds ............ 136
Colouring Stones artificially ... ... ... 48
Combustion of Diamond ... ... ... 65
Corundum ... ... ... ... ... 149
---------Canadian ... ... ... ... ... 191
---------United States ............ 161
Critical angle of Diamond ......... 58—314
Crocidolite ... ... ... ... ... 257
Crookes, Sir W., on Diamonds...... 61—73—86
---------on Phosphorescence ......... 61
---------on X-rays............... 61
Cudgegong Diamond fields ......... 97
Cupid's arrows ............... 292
Cutting of Diamonds ... ... ... ... 24
Cymophane (Chrysoberyl) ... ... ... 211—253
Dana, Prof., on origin of Diamond ...... 71
