Diamond, antiquity of, as a gem, 21, 114. appearance of, in nature, 86. asteriated, 103. black, 45, 87, 89, 104. blue, 103, 163, 164, 222. bort, 87. Cascalho, or conglomerate, 60. celebrated Agrah, 213. blue, of France, 163. Daria-i-noor, 205, 213. De Drèe, 102. Holland, 232. Hope, 103, 164. Kohinoor, 151, 180, 206-208, 214, 263. Mogul, 181, 202, 205. Mountain of Splendor, 214. Munich, 103. Napoleon, 163. Nassac, 187. Orloff, 149, 187, 206. Paul Pindar, 195. Pigott, 187. Polar Star, 154. Prince Riccia, 102. red, of Russia, 107. Regent, 161, 164, 165, 187, 206, 223, 263. Sancy, 166. Sea of Glory, 214. Shah, 150, 205. Stewart, 55. Sultan of Mattan, 36. Sultan’s, 112. Taj-Mah, 213. yellow, of Austria, 227. Chancourtois, views, 69. cleavage of, 91, 245. color of, 97, 99, 100-104, 228. rough diamonds, 257, 258. comparative brilliancy of, 93, 95. density of, 94. Cumberland, Duke of, 191. cut diamond, 241. deposition of, 20, 65. diminutive size of, 26, 27. dispersive power of, 96. Du Toits Pan placer, 53. electric properties of, 88; hardness, 88, 90, 25. formation of, 59. forms of brilliant style, 244, 251. brilliolette style, 252. rose style, 244, 251. table style, 250. globular forms, 87, 95, 245. green, 102, 135. imitations of, 265, 267. worn by Duchesse de Berri, 268. influence of, 83. injured by fire, 256. in time of Emperor Severus, 22. Pliny, 15, 22, 26. localities of Africa, 53. Algiers, 52. America, 49, 50. Arabia, 51. Australia, 56. Borneo, 35. Brazil, 37. Golconda, 31. India, 30. Ireland, 47. Java, 56. Russia, 47, 48. necklace of Rohan, 174. old English style, 243. origin of, Arago’s views, 69. Buffon’s views, 59. Davy’s views, 69. Goppert’s views, 65. Hartt’s views, 44. Humboldt’s views, 43. Lavoisier’s views, 68. Newton’s views, 67. pans, 62. phosphorescence of, 88. physical properties, 85. pink, 159, 228. placers, 58. prismatic display, 91, 96, 244. purity of, 262. quantity of, in use, 279, 280. red, 107, 222. refraction of, 92, 97. rough, value of, 274. specific gravity of, 87. spiritual properties, 104. swindle of Arizona, 51. testing of, 253, 258-264. value of, 269-282. yellow, 159, 227. Diminutive size of precious stones, 392. Dogni collection, 104. Dolomieu, views, 70. Don Antonio, 171. Duke of Anjou, diamonds of, 240. Brunswick, diamonds of, 232. Buckingham, jewels of, 194, 198. Burgundy, fête of, 241. Duten’s views of the emerald, 151, 285. E. Earl of Effingham, 151.