INDEX

Absorption, [53], [59]
Absorption spectra, [59]
Achroite, [220], [221]
Adularia, [255]
Agate, [247]
Akbar Shah diamond, [163]
Alalite, [272]
Albite, [254]
Alexandrite, [54], [60], [233]
Scientific, [122]
Almandine, [60], [214]
Oriental, [112], [172]
spinel, [112], [204]
Amazon-stone, [255]
Amber, [83], [298]
Amethyst, [239], [242]
Oriental, [111], [172], [239]
Anatase, [281]
Andalusite, [274]
Andradite, [216]
Anomalous refraction, [47]
Anorthite, [254]
Apatite, [279]
Apophyllite, [290]
Aquamarine, [184], [193]
Arizona-ruby, [213]
Artificial stones, [124]
Asteria, [38], [177]
Asterism, [38]
Australia stones, [154], [174], [182], [195], [213], [216], [227], [232], [252], [288]
Austrian Yellow diamond, [165]
Aventurine, [240], [241]
Axes, Crystallographic, [9]
Optic, [49]
Axinite, [278]
Azure-quartz, [244]
Azurite, [287]
Balas-ruby, [203]
Barnato, Barnett, [145]
Baroque, Barrok, pearls, [292]
Bastite, [272]
Benitoite, [267]
Berquem, Louis de, [90], [161]
Beryl, [184]
Beryllonite, [270]
Bezel facet, [92]
Biaxial double refraction, [45], [49], [57]
Bisectrix, [45], [49]
Black diamond, [129]
Black lead, [129]
Black opal, [249], [250]
Black Prince’s ruby, [206]
Blister-pearl, [296]
Bloodstone, [247]
Blue felspar, [255]
Blue ground, [143], [147]
Blue John, [285]
Boart, [103], [129], [133]
Bohemian garnet (pyrope), [207], [212]
Bone turquoise, [259]
Boodt, A. B. de, [132], [213]
Borgis, Hortensio, [161]
Borneo stones, [154], [170]
Bort, v. Boart, [103], [129], [133]
Bottle-stone, [284]
Boule, [118]
Bowenite, [263]
Braganza diamond, [170]
Brazil stones, [138], [165], [166], [169], [194] et seq., [201], [215], [223], [236], [243], [244], [248], [266], [269], [270], [274]
Brazilian emerald, [111], [220], [221]
peridot, [221]
sapphire, [111], [221]
topaz, [111], [197]
Brilliant form of cutting, [92]
Brilliant, Scientific, [122]
Bristol diamonds, [243]
Bruting, [100]
Burma stones, [178], [205], [223], [227], [263]
Button-pearl, [295]
Byes, Bywaters, [136], [150]
Cabochon form of cutting, [88]
Cacholong, [251]
Cairngorm, [239]
Callaica, callaina, callais, [258]
Calcite, [40], [289]
California stones, [156], [195], [202], [224], [259], [265], [267], [275]
Californite, [264], [275]
Cape-ruby, [213]
Carat weight, [72], [84]
Carbon, [129]
Carbonado, [129]
Carborundum, [105]
Carbuncle, [89], [215]
Carnelian, [247]
Cascalho, [139]
Cassiterite, [281]
Cat’s-eye (chrysoberyl), [38], [90], [233]
(quartz), [39], [90], [240]
(tourmaline), [39], [219]
Hungarian, [244]
Ceylon stones, [181], [195], [201], [205], [212], [215], [216], [223], [232], [236], [237], [243], [244], [255], [267], [274], [279], [284]
Ceylonese peridot (tourmaline), [221]
Ceylonite, [204]
Chalcedony, [246]
Chatoyancy, [38]
Chert, [247]
Chessylite, [287]
Chrysoberyl, [233]
Chrysocolla, [288]
Chrysolite (chrysoberyl), [233]
(peridot), [225]
Chrysoprase, [247]
Church, Sir Arthur, [61], [211], [231]
Cinnamon-stone, [211]
Citrine, [239]
Cleavage, [80], [100], [149]
Close goods, [149]
Colenso diamond, [131]
Colour, [53]
Colour dispersion, [20], [97]
Conchiolin, [293]
Coral, [298]
Cordierite, [266]
Cornish diamonds, [243]
Corundum, [172]
Crocidolite, [39], [240]
Crookes, Sir William, [132], [153]
Cross facet, [93]
Crystal, [6], [7], [8]
Rock-, [97]
Cubic system, [8]
Culet facet, [93]
Cullinan diamond, [94], [100], [168]
Culture pearls, [297]
Cumberland diamond, [164]
Cyanite (Kyanite), [79], [273]
Cymophane, [234]
Darya-i-nor diamond, [162]
De Beers diamonds, [167]
Demantoid, [216]
Density, [63]
Deviation, Minimum, [30]
Diamond, Characters of, [128]
cutting, [90]
gauges, [86]
Glaziers’, [135]
mining, [146]
Occurrence of, in—
Borneo, [154]
Brazil, [139]
German South-West Africa, [155]
India, [138]
New South Wales, [154]
Rhodesia, [155]
South Africa, [139]
Origin of, [151]
-point, [91]
-rose, [92]
-table, [91]
Diamonds, Classification of, [136], [149]
Historical, [157]
Prices of, [135]
Dichroism, [55]
Dichroite, [266]
Dichroscope, [55]
Diffusion column, [65]
Diopside, [272]
Dioptase, [280]
Dispersion, Colour, [20], [24], [97]
Disthene, [273]
Dop, [102]
Double refraction, [28], [40]
Doublet, [125]
Dresden diamond, [171]
Drop-stone, [94]
Duke of Devonshire’s emerald, [191]
Edwardes ruby, [175]
Electrical characters, [82]
Emerald, [89], [184]
Brazilian, [220], [221]
Evening, [225]
Oriental, [111], [172]
Scientific, [122]
Uralian, [216]
Emeraldine, [247]
Emery, [175]
English Dresden diamond, [166]
Enstatite, [271]
Epidote, [275]
Essence d’Orient, [126]
Essonite (Hessonite), [211]
Euclase, [269]
Eugénie diamond, [164]
Evening emerald, [225]
Excelsior diamond, [167]
Extinction, [45]
Faceting machine, [105]
False topaz, [239]
Felspar, [254]
Fire, [20], [96]
Fire-marble, [289]
Fire-opal, [251]
Flats, [150]
Flêches d’amour, [240]
Flint, [247]
Floors, [147]
Fluor, [285]
Frémy, E., [115]
Garnet, [207]
Green, [271]
Gaudin, M. A. A., [115]
Gauges, Diamond, [86]
Girdle, [92]
Glass, [7], [124]
Gnaga Boh ruby, [180]
Goniometer, [30]
Grain, Pearl, [86]
Graphite, [129]
Greaser, [149]
Great Mogul diamond, [161]
Great Southern Cross group of pearls, [294]
Great Table diamond, [162]
Great White diamond, [167]
Green garnet, [271]
Greenstone, [261]
Grossular, [211]
Habit, [12]
Hardness, [78]
Haüynite, [286]
Heavy liquids, [64]
Hematite, [282]
Hessonite, [211]
Hexagonal system, [10]
Hiddenite, [266]
Hope cat’s-eye, [237]
chrysolite, [237]
diamond, [170]
pearl, [294]
sapphire, [121]
Hornstone, [247]
Hungarian cat’s-eye, [244]
Hyacinth, [211], [228]
Hydrophane, [250]
Hydrostatic weighing, [72]
Hypersthene, [271]
Iceland-spar, [40], [44]
Idocrase, [274]
Imitation stones, [124]
Imperial diamond, [167]
Index of refraction, [16]
India stones, [137], [181], [194], [215], [243], [244], [248], [290]
Indicators, [65]
Indicolite, [221]
Interference of light, [39], [48]
Iolite, [266]
Iris, [240]
Isle of Wight diamonds, [243]
Isomorphous replacement, [13], [19]
Jacinth, [211], [228]
Jade, [260]
Jadeite, [262]
Jargoon, [228]
Jasper, [247]
Jehan Ghir Shah diamond, [163]
Jigger, [149]
Jubilee diamond, [167]
Kauri-gum, [299]
Khiraj-i-Alam ruby, [206]
Kimberlite, [152]
King topaz, [181], [201]
Klein’s solution, [67]
Koh-i-nor diamond, [137], [158]
Kunz, Dr. G. F., [186], [224], [262], [265]
Kunzite, [265]
Kyanite, [79], [273]
Labradorite, [255]
La Pellegrina pearl, [294]
Lapis lazuli, [286]
Lazurite, [286]
Lozenge facet, [93]
Lumachelle, [289]
Lustre, [37]
Maacles, Macles, [12], [150]
Madagascar stones, [195], [224], [243], [265], [266]
Malachite, [287]
Malacolite, [272]
Manufactured stones, [113]
Marble, [289]
Mattan diamond, [155], [170]
Matura diamonds, [232]
Mazarin, Cardinal, [92]
Meerschaum, [288]
Mêlée, [136]
Methylene iodide, [26], [66]
Metric carat, [85], [87]
Milky-quartz, [240]
Minimum deviation, [30]
Mocha-stone, [247]
Moe’s gauge, [87]
Mohs’s scale of hardness, [78]
Moissan, Henri, [153]
Moldavite, [283]
Monoclinic system, [11]
Moon of the Mountains diamond, [162]
Moonstone, [39], [255]
Morganite, [186], [195]
Moroxite, [279]
Moss-agate, [247]
Mother-of-emerald, [240]
Mother-o’-pearl, [292]
Nacre, [292]
Napoleon diamond, [164]
Nassak diamond, [163]
Negative double refraction, [45]
Nephrite, [261]
Nicol’s prism, [44]
Nizam diamond, [162]
Obsidian, [283]
Occidental topaz, [111], [239]
Odontolite, [259]
Off-coloured diamonds, [130]
Olivine (demantoid), [216]
(peridot), [225]
Onyx, [247]
Opal, [39], [249]
Fire, [251]
-matrix, [251]
Opalescence, [39]
Optical anomalies, [47]
Optic axes, [49]
Oriental almandine, [112], [172]
amethyst, [111], [172]
emerald, [111], [172]
topaz, [111], [172]
Orient of pearls, [292]
Orloff diamond, [160]
Orthoclase, [254]
Orthorhombic system, [11]
Pacha of Egypt diamond, [165]
Paste, [47], [124]
Paul I diamond, [171]
Pavilion, [93]
Pavilion facet, [93]
Pear-drop pearls, [292]
Pear-eye pearls, [292]
Pearl, [291]
grain, [86]
imitations, [126]
Pendeloque, [94]
Peridot, [225]
Brazilian, [221]
Ceylonese, [221]
Peruzzi, Vincenzio, [92]
Phenakite, [269]
Pigott diamond, [164]
Pipes, [152]
Pistacite, [275]
Pitt diamond, [100], [159]
Plasma, [247], [264]
Pleochroism, [57]
Pleonaste, [204]
Pliny, [6], [88], [138], [184], [191], [241], [249]
Polar Star diamond, [163]
Polarization, [42]
Porter-Rhodes diamond, [166]
Positive double refraction, [45]
Prase, [240], [247]
Prehnite, [278]
Pycnometer, [75]
Pyrites, [282]
Pyrope, [212]
Quartz, [50], [238]
Quoin facet, [93]
Rainbow-quartz, [240]
Reconstructed stones, [116]
Reef, [144]
Reflection of light, [14]
Refraction of light, [15]
Refractive index, [16]
Refractometer, [22], [50]
Regent diamond, [100], [159]
Retgers’s salt, [69]
Rhodes, Cecil J., [145]
Rhodesia stones, [155], [183], [213], [236]
Rhodolite, [62], [214]
Rhodonite, [287]
Rock-crystal, [97], [239]
Rock-drill, [134]
Röntgen rays, [83]
Rose form of cutting, [91]
Rose-quartz, [240]
Rospoli sapphire, [182]
Rotation of plane of polarization, [50]
Rubellite, [220], [223]
Rubicelle, [203]
Ruby, [98], [110], [172]
Balas-, [203]
Cape-, [213]
Sancy diamond, [161]
Sapphire, [98], [110], [172]
Brazilian (tourmaline), [221]
-quartz, [244]
Water- (iolite), [266]
Water- (topaz), [201]
Sard, [247]
Sardonyx, [247]
Saussurite, [263]
Schorl, [221]
Scientific alexandrite, [122]
brilliant, [122]
emerald, [122]
topaz, [121]
Scotch topaz, [239]
Seed pearls, [294]
Serpentine, [289]
Setting of gem-stones, [107]
Shah diamond, [163]
Sheen, [39]
Shepherd’s Stone diamond, [163]
Siam stones, [180]
Siberia and Asiatic Russia stones, [182], [188], [194], [201], [217], [223], [236], [244], [256], [262], [269], [270], [287]
Siberite, [221]
Siderite, [244]
Silver-thallium nitrate, [69]
Skew facet, [93]
Skill facet, [93]
Smoky quartz, [240]
Snell’s laws, [16]
Soapstone, [288]
Sodalite, [286], [287]
Sonstadt’s solution, [67]
South Africa stones, [139] et seq., [166], [167] et seq., [213], [232], [244], [264], [271]
Spanish topaz, [239]
Specific gravity, [63]
Specific-gravity bottle, [75]
Spectroscope, [59]
Spectrum, [20], [25]
Spectrum, Absorption, [59]
Spessartite, [216]
Sphene, [276]
Spinel, [203]
Spodumene, [265]
Spotted stones, [149]
Star-facet, [92]
Star of Africa diamond, [168]
Star of Este diamond, [165]
Star of Minas diamond, [169]
Star of South Africa diamond, [141], [166]
Star of the South diamond, [139], [165]
Starstones, [38], [177]
Steatite, [288]
Step form of cutting, [98]
Stewart diamond, [166]
Strass, [124]
Sunstone, [255]
Synthetical stones, [113]
Syriam, Syrian, garnet, [215]
Table facet, [92]
Table form of cutting, [91]
Tavernier, J. B., [91], [129], [137], [161], [162], [170]
Templet facet, [92]
Tetragonal system, [9]
Thulite, [289]
Tiffany diamond, [171]
Tiger’s-eye, [39], [240]
Timur ruby, [206]
Titanite, [276]
Topaz, [197]
Brazilian, [197]
False, [239]
Occidental, [111], [239]
Oriental, [111], [173]
Scientific, [121]
Scotch, [239]
Spanish, [239]
Topazolite, [216]
Total-reflection, [18], [21]
Tourmaline, [43], [219]
Trap form of cutting, [98]
Trichroism, [57]
Triclinic system, [12]
Triplet, [126]
Turquoise, [257]
Turquoise-matrix, [258]
Tuscany diamond, [165]
Twinning, [12], [47]
Uniaxial double refraction, [45], [48], [57]
Uralian emerald, [217]
Uvarovite, [218]
Variscite, [259]
Verdite, [264]
Verneuil, A. V. L., [116]
Vesuvianite, [274]
Victoria diamond, [167]
Violane, [287]
Wart-pearl, [296]
Water (of diamonds), [129]
(of pearls), [292]
Water-chrysolite, [284]
-sapphire (iolite), [266]
-sapphire (topaz), [201]
White opal, [249]
White Saxon diamond, [165]
Wollaston, W. H., [133]
X-rays, [83]
Yellow ground, [143]
Zircon, [228]

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