INDEX 



625 



Rock-crystal, 474 



• -drills, 246 



Rontgen rays, 35, 565 

 Rosa pallido coral, 603 



viva coral, 603 



Rose-cut, Tj 



diamonds, 241 



opal, 3 36 



quartz, 488 



recoupee, 78 



-red stones, 570, 580 



topaz, 332 



Rosette, jy 



Rospoli sapphire, 285 

 Rosso coral, 603 



scuro coral, 603 



Rotten coral, 613 

 Roumanian amber, 554 

 Roumanite, 554 

 Round amber, 550 



stones (diamond), 213 



Rounded forms of cutting, 79 

 Rounding, operation of, 81 

 Rubbing the diamond, 243 

 Rubellite, 366, 369 

 Rubicelle, 297 

 Rubis balais, 297 

 Ruby, 26s 



artificial, 94, 280 



distinction from other red 



stones, 281 



Adelaide, (garnet), 279, 



355 



Arizona (garnet), 359 



balas (spinel), 297 



Black Prince's, 298 



Bohemian (quartz), 488 



Brazilian (topaz), 332 



Cape (garnet), 360 



cat's-eye, 284, 266 



Ceylonese (garnet), 354 



Colorado (garnet), 359 



Elie (garnet), 359 



false (fluor-spar), 529 



feminine, 265 



glass, 282 



masculine, 265 



mother-of-, 271 



oriental, 265 



Siberian (tourmaline), 370 



-spinel, 297 



star-, 266, 284 



-star-stone, 284 



tracb in Burma, 270 



Ruin-agate, 512 



Russia, 231, 410, 427, 43S, 448, 



488, 489, 541, 599 — see also 



Urals 

 Russian topaz, 338 

 Rusty ground, 190 

 Rutile, 489, 534 



Safiras (topaz), 334 

 Sagyin (Burma), ruby, 274 

 Saint Augustine's diamond 

 mine, 205, 208 



Stephen's stone, 505 



Sakeriya (India), diamond, 152 

 Salobro (BrazU), diamond, 175 

 Salt-grains (diamond), 242 

 Salzburg, 316, 403, 418, 488, 



498 

 Sambalpur (India), diamond, 



149 

 Sancy diamond, 250 

 Sand, 92 



pearls, 592 



Sandy sard, 510 



Sao Joao da Chapada (Brazil), 



diamond, 165 



Paulo (Brazil), diamond, 



170 



Sappare, 413 

 Sapphir d'eau, 408 

 Sapphire, 282 



artificial, 280 



counterfeiting, 292 



amethyst- (corundum), 



294 



Brazilian (topaz), 330 



(tourmaline), 372 



-cat's-eye, 284 



false (fluor-spar), 529 



(lapis-lazuli), 438 



leuco-, 264, 282 



lynx- (corundum) 283 



(cordierite), 408 



oriental, 282 



— — -quartz, 488 

 spinel, 299 



■ • -star-stone, 284 



topaz- (corundum), 293 



■ water- (cordierite), 408 



white, 282 



— — yellow, 293 

 Sapphirine (chalcedony), 506 

 Sard, 510 



onyx, 512 



Sarduine, 510 



Satin*spar, 527 



Satiny lustre, 37 



Saxon chrysolite (topaz), 331, 



333 



topaz, 331 



White brilliant, 251 



Scarabs, 86 



Sceptre quartz, 482 

 Schaumburg diamonds (quartz), 



477, 479 

 SchUler-quartz, 491 



spar, 453 



Schnallenstein, 334 

 Schnecken topaz, 334 



Schopstein (amber), 541 



Schorl, 366 



Schrauf's rule, 105, 259 



Sclerometer, ^3 



Scotch pebbles, 515 



Scotland, 453, 480, 487, 488, 



500, 503, 511, S15, 533. 598 

 Sculpture, 86 

 Sea-amber, 540 



pearls, 594 



stone (amber), 540 



Second by-water (diamond), 



213 



Secondo coloro coral, 603 



Seed-pearls, 592 



Segima diamond, 219 



Semelpur (India), diamond, 151 



Semi-bastard amber, 537 



• -carnelian, 506 



opal, 385 



-precious stones, 2 



transparency, 34 



Senaille, 241 



Serra da Chapada (Brazil), dia- 

 mond, 171 



da Cincora (Brazil), dia- 

 mond, 172 



Serro do Frio (Brazil), dia- 

 mond, 158 

 Servi90s da serra, 169 



do campo, 169 



do rio, 168 



Setting stones, 89 



en pave, 359 



Shah diamond, 249 

 Shell-agate, 512 



cameo, 86 



cut, 79 



garnet-, 79, 349, 353 



Shelly amber, 536 



Shepard's stone diamond, 249 



Shot-pearls, 592 



Siam, 274, 286, 293 



Siberia, 322, 324, 339, 362, 402, 

 420, 423, 427, 443, 448, 463, 

 468, 501, 502, 506, 509, 531, 

 599 — see also Urals 



Siberian aquamarine, 319 



ruby (tourmaline), 370 



topaz, 330 



tourmaline, 366, 369 



Siberite, 366, 369 

 Sicilian amber, 555 

 Siderite (quartz), 488 

 Siliceous malachite, 527 

 Silicified wood, 496 



Silk, 35. 92 

 Silky lustre, 37 

 Silver-thallium nitrate, 23 

 Simetite, 555 



Simla (India), diamond, 152 

 2r 



