INDEX 



6 ST 



Udesna (India), diamond, 152 



Ultramarine, 440 



Uniaxial crystals, 51, 61 



Unio crassus, 598 



margaritifer, 594 



United States, 138, 226, 279,289, 

 293. 299> 3T-7, 323, 324, 327, 

 337, 344, 352, 355, 359, 360, 

 369, 371, 372, Z73, 382, 386, 

 397, 403, 407, 410, 412, 414, 

 415, 419, 420, 421, 422, 426, 

 428, 431, 435, 437, 446, 448, 

 450, 454, 455, 456, 464, 468, 

 478, 481,484, 487, 489, 490, 



497, 498, SOI, S07, 530, 531, 

 534, 558, 599 



Unripe amber, 553 



pearls, 590 



Unstriped chalcedony, 504 



Uralian emerald (garnet), 362 



Urals, 139, 230, 291, 304, 30s, 



315, 320, 325, 326, 338, 352, 



361, 370, 372, 415, 420, 426, 



437, 446, 456, 484, 487, 488, 



498, SOI, 502, 525, 531 

 Uruguay, 355, 483,487, S08, SiS 

 Uvarovite, 348 



Vaal River (South Africa), dia- 

 mond, 180, 184 

 Vaalite, 186, 193 

 Value and price, loi 

 Varnish amber, 546, 550 

 Venus' hair-stone, 489 

 VermeUle, 297, 352 



garnet, 352, 354, 356 



orientale (corundum), 294 



Vermilion garnet, 352 

 Vesuvian, 410 



gems, 410 



Vesuvianite, 410 

 Victoria diamond, 254 

 Vindhyan formation, 141 

 Vinegar-spinel, 97 

 Violet ruby, 294 



■ stones, 569 



Vitreous lustre, 36 

 Volcanic glass, 446 

 Vooruitzigt (S. Africa), dia- 

 mond, 181 

 Vulcanite, 558 



Wairagarh (India), diamond, 

 150 



Wajra Karur (India), diamond, 

 146 



Waldeck's Plant (Vaal R.), dia- 

 mond, 175 



Wales, 599 



Wart-pearls, 587 



Water of diamonds, 256 



of pearls, 590, 593 



chrysolite (moldavite). 



449 



-clear, 34 



-opal (moon-stone), 429 

 -sapphire (cordierite), 408 

 (corundum), 283 



Wax-agate, 506 



opal, 385, 386 



Waxy lustre, 37 

 Wesselton diamond mine, 184 

 Westphal's balance, 16, 21 

 White carnelian, 506, 508 



Wiiite sapphire, 2S2, 292 



Saxon Brilliant, 251 



stones, S77, 5^6 



Wire-drawing, holes for, 70 

 WobalpuUy (India), diamond, 



145 



Wolf's-eye, 429 



Wood-opal, 385, 378 



stone, 496 



Wooden-spoon-seller's sap- 

 phire, 285 



Work-stone amber, 546 



tiles (amber), 549 



Wustapilly (India), diamond, 

 148 



X RAYS, 35, 565 



Xanthite, 412 



Yellow clean stones (dia- 

 mond), 213 



ground, 189 



sapphire, 293 



stones, 573, 579 



stuff, 189 



Yellowish-brown stones, 573 



green stones, 574 



Yu, 458, 463, 465, 467, 501, 505 

 Yu-stone, imperial, 503 



Zeolite group, 422 

 Zinc-spar, 423 

 Zircon, 340 

 Zonochlorite, 422 

 Zotten, 547 



Printed by Pallantyne, Hanson fi' Co. 

 London &' Edinburgh 



