PAGE.
Parisite ......... ........ 203
Parrot, on origin of Diamonds ... ... ... 69
Parteal, Diamonds of ............ 128
Pearl, chemical composition of ... ... ... 308
Penning, W. H., on old Diamond workings ... 75
Pepys, on Diamond ............ 67
Peridot (Olivine)............... 286
Persian Turquoise............... 225
Petzholdt, on Diamonds............ 65—70
Phenakite.................. 288
Phosphorescence of Diamond ... ... ... 60
---------Rubies ............... 152
Pirsson, Prof., on matrix of Montana Sapphires ... 190
Pitt Diamond ............... 128
Pleochroism ....... ......... 318
Pleonaste (Spinel)............... 197
Pliny, on Diamonds ... ... ... ... 54
---------on Crystal ... ... ... ... ... 293
Point-cut Diamonds ... ... ... ... 31
Polarization of light ... ... ... ... 317
Porcelain Jasper ... ... ... ... 272
Portrait Stones ... ... ... ... ... 31
Portugal, Diamond-cutting in ......... 23
Posewitz, on Borneo Diamonds......... 102
Prehistoric Diamond workings ... ... ... 75
Pyro-electricity ............... 300
Pyrope (Garnet) ... ... ... ... ... 262
Quartz ... ... ... ... ... ... 291
---------Cat's Eye............... 289
---------smoky ... ... ... ... ... 292
Queensland Opals ... ... ... ... 219
---------Sapphires ... ... ... ... ... 191
Rati, value of the............... 320
