Calamine, religious use of, 271, 272 Calculus, renal, curious poem on, 384 California Midwinter Mem. Mus., San Francisco, vi Californite, 323 _Callais_, 108 Cancer, zodiacal sign, 346, 354 Canrobert, Marshal, faith in amulets, 25 Cantimpré, Thomas de, 17, 59 Capricorn, zodiacal sign, 342, 347 Carbuncle, 33, 39, 145, 162, 168, 174, 243, 292, 305, 343, 357, 372 as symbol of Christ’s sacrifice, 61 brought by serpent, 62 gem of Venus, 348 in breastplate, 276 _Carcinia_, 34 Cardano, Girolamo, 52, 70, 78, 83, 98, 151, 160, 264 Carnelian, 6, 36, 37, 119, 124, 133, 226, 227, 229, 265, 290, 291, 319 Arabic inscription on, 63 engraved with zodiacal signs, 341 figures engraved in, by Israelites, 120 gem of Virgo, 346 of the Sun and Venus, 348 Goethe’s praise of, 62 identified with _odem_-stone of breastplate, 120 Mohammed’s seal-ring of, 64 Napoleon’s seal of, 64 Oriental use against envy, 63 therapeutic effect of, 370 Carrington, Hereward, vii Catherine de’ Medici, girdle of, set with talismanic stones, 317 Cat’s-eye, 65, 238, 242, 243, 244 alexandrite, 334 chrysoberyl, 333 quartz, 334 Cellini, Benvenuto, 154 Celonite, 134 _Ceraunia_, 34, 134, 162 Cernowitz, Hungary, opals of, 148 Cethel, 140 Ceylon, 54, 65, 75, 165, 252, 324 _Chalazia_ (rock-crystal), 34 Chalcedony, 39, 65, 122, 134, 265, 303, 305, 313, 372 as symbol of St. Andrew, 312 gem of Capricorn, 347 _Chalchiuhatl_, “water of precious stones,” in Aztec, 40 _Chalchiuitl_ (jadeite?), 247, 251 Charles I of England, 262 Charles V of France, 388 Charles V of Germany and the turquoise, 24 Charles XII of Sweden, 57 Chau Ju-Kua, 165 Chaucer, Geoffrey, 43 _Chelonites_, 34 Chiastolite (macle) as religious symbol, 270 therapeutic effect of, 270 Childeric, crystal ball of, 219-221 Chinese amulets, 40, 84-87 Chin T’sang Khi, of loadstone, 95 Chirocrates, 93 Chlorastrolite, from Minnesota, 365 Chlorophane, luminescence of, 172, 173 Christ, blood of, figured in bloodstone, 267 colors symbolical of his sacrifice, 274 foundation stones symbols of, 313 head of, naturally figured in quartz, 267, 268 natural images of, in stones, 266, 267, 268, 269 sacrifice of, symbolized by amethyst, 269 Chromium oxide, 10 Chrysoberyl, 54, 65, 313 cat’s-eye, 333 Chrysolampis, 164 Chrysolite, 29, 133, 291, 297, 303, 305 as symbol of St. Bartholomew, 312 from the “Serpent Isle,” 66 gem of Libra, 346 of the Sun, 347 in Cologne Cathedral, 66 statue of Arsinoë in, 67 Chrysoprase, 11, 37, 67, 265, 303, 305, 313, 316, 319 as symbol of St. Thaddeus, 312 of Alexander the Great, 68 Chrysostom, John, 125 Cicero, his daughter’s emerald, 31 Claudian, 94 Clavijo, Ruy Gonzalez de, 266 Cleandro, Arnobio, 165, 372 Clemens Alexandrinus, 309