LIST OF TEXT FIGURES 



XV 



Fig. 48. " Star of the South." Two viows of 



the rough stone . . . 2fi2 



" Victoria " diamond of 457} carats 



from South Africa . . . 253 



Outline of a diamond of 428^ carats 



from South Africa . . . 253 

 Largest known diamond, the " Ex- 

 celsior," weight 97 1 J carats. From 

 the Jagersfontein mine, South 



Africa 254 



The " Tiffany Brilliant," 125-1- carats 264 

 Crystalline forms of corundum {a — d, 



ruby ; e — /, sapphire) . . . 262 

 Occurrence of ruby and sapphire in 



Burma and Siam . . 2G9 



Ruby-fields of Burma . 2(51) 



Ruby and sapphire mines of Muang 



Klung, Siam . . . . 276 



Ruby mines in Badakshan on the 



Upper Oxus . . .278 



Crystal of artificially prepared ruby 280 



Occurrence of sapphire in Ceylon . 287 



— cl. Crystalline forms of spinel 295 



— c. Crystalline forms of chryso- 



beryl 301 



62(( — e. Crystalline forms of beryl 



(emerald and aquamarine) . 307 



63. Crystal of emerald belonging to the 

 Duke of Devonshire . . .310 



63". Occurrence of beryl near Mursinka, 



Urals . . . . 321 



64. Crystalline form of euclase . 325 

 65a — c. Crystalline forms of phenakite 326 

 66a-:-rf. Crystalline forms of topaz . 328 

 67. Occurrence of yellow topaz near 



Ouro Preto, Brazil . . 335 



49. 



50, 



51. 



52. 

 53. 



54. 



55. 



56. 



57. 



58. 

 59. 

 60ffl 

 61a 



Fig. 68(( — (/. Crystalline forms of zircon 

 ,, 6y(( — (/. Crystalline forms of garnet 

 ,, 70a — I'. Crystalline forms of tourmaline 

 ,, 71. Crystalline form of olivine (chryso- 

 lite) 



,, 72. Crystalline form of cordierite . 

 ,, 73«, b. Crystalline forms of idocrase 

 „ 74. Crystalline form of axinite 

 ,, 75. Crystalline form of kyanite 

 ,, 76. Crystalline form of andalusite . 



„ 77. Chiastolite 



„ 78a — c. Crystalline forms of epidote 



79. 

 80a- 

 81. 

 82. 



83. 



Crystalline form of dioptase 

 — c. Crystalline forms of felspar 

 Crystalline form of amazon-stone 

 Occurrence of lapis-lazuli in Badak- 

 shan ...... 



Occurrence of lapis-lazuli in the neigh- 

 bourhood of Lake Baikal 

 84. Occurrence of lapis-lazuli on theTalaya 

 River .... 



85a — d. Crystalline forms of quartz 

 86. Sceptre-quartz . ... 



ccurrence of amethyst near Mursinka 



in the Urals 



" Fleches d'amour " from Wolf's 

 Island, Lake Onega, Russia . 



Mocha-stone 



Agate-grinding and polishing work- 

 shop at Oberstein 

 Agate-grinding workshop of Herr 

 August WintermantelatWaldkiroh 

 (Baden) . ... 



Antique intaglio 



Antique cameo . ... 



Antique cameo . . . . 



K7. 



88. 



89. 

 90. 



92. 

 93. 

 94. 



I'A (! ]■: 

 341 

 347 

 365 



405 

 408 

 411 

 412 

 414 

 415 

 416 

 417 

 419 

 424 

 426 



441 



443 



443 

 471 

 483 



485 



489 

 507 



519 



521 

 523 

 523 

 523 



