Achroite, 64
Actinolite, 29
Adularia, see moonstone
Agate jasper, 120
Agate onyx, see onyx
Agate, see quartz, 106, 119, 122, 123, 124, 126
Alexandrite, 8, 54, 56
Almandine, 9, 30, 80
Almandite, 29, 80
Amazon stone, 17, 88, 91
Amber, 17, 128
American ruby, 80, 83
Amethyst, 8, 9, 16, 17, 44, 49, 107, 110, 111
Amethystine quartz, see amethyst
Antimony, 29
Apatite, 19, 87
Aquamarine, 8, 16, 53
Aquamarine chrysolite, 53
Arizona ruby, 80, 83
Asterias, see star sapphires
Aurora red sapphire, see Oriental hyacinth
Avanturine, 113, 114
Avanturine felspar, see sunstone
Axinite, 17, 102
Balas ruby, 48
Banded agate, 119
Beckite, 120
Beryl, 14, 16, 17, 44, 50, 52, 53, 87
Blood-stone, see heliotrope
" see hematite
Bobrowska garnet, 80, 83
Bohemian garnet, 80 82
" diamond, see rock-crystal
" topaz, see yellow quartz
Bone turquois, 62
Bort, 38
Brazilian aquamarine, 85
" emerald, 64, 67
" ruby, 85
" sapphire, 85
" topaz, see topaz
Bronzite, 30
Cachelong, 69, 70
Cairngorm, 107, 111
Calcite, 19
Cameo, 8
Cannel coal, see jet
Cape garnet, 80, 83
Cape ruby, 80, 83
Carbon, 37
Carbonate, see carbon
Carbuncle, 80 83
Carnelian, 17, 113, 123, 124
" onyx, 122
Cat’s-eye, corundum, 8, 54, 57, 115, 116
" quartz, 18, 58, 107, 113, 114, 115
Ceylon cat’s-eye, see corundum cat’s-eye
" chrysolite, 64, 79
" opal, see moonstone
" peridot, 64
Ceylonite, 47
Chalcedonyx, see chalcedony
Chalcedony, 8, 9, 16, 17, 113, 118, 119, 120, 122, 124
Chrysoberyl, 16, 17, 45, 54, 56, 57, 79
Chrysolite, 17, 30, 53, 58, 78, 87, 99, 107
Chrysoprase, 17, 107, 113, 117
Cinnamon stone, see grossularite
Cleavage, 10
Cloudy agate, 120
" chalcedony, see chalcedony
Colors, 16
Coral, 130
Cordierite, see dichroite
Corundum, 9, 17, 39, 45, 47, 48, 49
Crocidolite, 5, 18, 113, 115
Crystallization, 10
Cutting, 32
Cyanite, 17, 92
Cymophane, 54, 56, 57
Decimal system, 28
Demantoide, see Bobrowska garnet
Diamond, 9, 11, 12, 14, 15, 17, 18, 20, 31, 32, 33, 35,
40, 41, 49, 51, 52, 60, 75, 101, 109
Dichroiscope, 14
Dichroite, 97
Diopside, 103
Egyptian jasper, 123
" pebbles, see Egyptian jasper
Electricity, 31
Emerald, 8, 9, 16, 17, 18, 31, 44, 51, 87, 95, 107
Epidote, 17, 101
Essonite, see grossularite
Euclase, 99
Eye agate, 119
False emerald, see fluor spar
" lapis, 124
" ruby, see fluor spar
" topaz, see fluor spar and yellow quartz
Fancy sapphires, 44
Felspar, 20, 88, 91
Fish-eye, see moonstone
Flint, 113
Fluor spar, 17, 19, 31, 104
Fortification agate, 119
Fossil turquois, 63
Fracture, 11
Fusibility, 28
Garnet, 12, 14, 15, 17, 21, 32, 42, 53, 64, 80, 107
Girasol, 46
Glass, 15
Golden beryl, 54
Goldstone, see avanturine
Goutte d’eau, 85
Green felspar, see Amazon stone
" garnet, 80, 99
" sapphire, see Oriental emerald
Greenish-yellow sapphire, see Oriental chrysolite
Grossularite, 30, 80, 82
Hair-stone, see cairngorm
Heliotrope, 113, 116, 118, 120
Hematite, 18, 124
Hiddenite, 95
Hornstone, 113
Hungarian cat’s-eye, see quartz cat’s-eye
Hyacinth, 42, 58, 59
Hydrophane, 69, 70
Hypersthene, 105
Iceland lava, see obsidian
" spar, 14
Idocrase, 17, 98
Indian topaz, see yellow quartz
Indicolite, 64, 67
Intaglio, 8
Iolite, see dichroite
Iridescent quartz, see rose quartz
Jacinth, 58, 59, 82
Jargoon, 58, 59
Jasper, 17, 106, 113, 123, 124
Jet, 16, 128
Labrador, 16, 88, 91
" hornblende, see hypersthene
Labradorite, see Labrador
Labrador spar, see Labrador
Lake George diamond, see rock-crystal
Lapis lazuli, 17, 93, 124
Lava, see obsidian
Light-green sapphire, see Oriental aquamarine
Love arrows, see cairngorm
Lustre, 17
Magnetism, 30
Malachite, 17, 127
Mica, 11
Mineral turquois, 61, 62
Mocha agate, 120
Moonstone, 17, 38, 89, 91, 109, 112
Moss agate, 120
Mother of emerald, see prase
Natrolite, 29
Needle-stone, see cairngorm
Nicolo, 124
Obsidian, 10, 16, 125
Occidental cat’s-eye, see quartz cat’s-eye
" diamond, see rock-crystal
" topaz, see yellow quartz
" turquois, 62
Odontolite, 17, 62
Œil de bœuf, see Labrador
Oligoclase, see sunstone
Olivine, 17, 18, 53, 78, 84
Onyx, 8, 106, 107, 113, 120, 124
Opal, 8, 9, 10, 16, 17, 18, 30, 69, 100, 102, 107
" common, see opal
" fire, " "
" noble, " "
Opaline felspar, see Labrador
Oriental amethyst, 39, 44
" aquamarine, 39, 44
" chrysolite, 39, 44; see also chrysoberyl
" emerald, 39, 44, 51
" hyacinth, 39, 44
" opal, see opal
" topaz, 39, 44, 87
" turquois, 61
Orthoclase, 29, 87
Orthose, see moonstone
Ox-eye, see Labrador
Pearl, 71
" baroque, 74
" black, 73, 124
" bouton, 74
" pink, 77
Pebble diamond, see rock-crystal
Peridot, 16, 78
Persian turquois, 62
Phenacite, 101
Phosphorescence, 31
Plasma, 113, 118
Pleiochroism, 14
Pleonast, 47
Polarization of light, 13
Polishing, 32
Prase, 17, 113, 117, 118
Precious schorl, see tourmaline
Purple sapphire, see Oriental amethyst
Pyrope, 30, 80, 82
Quartz, 9, 16, 20, 22, 42, 50, 106, 123
" cat’s-eye, see cat’s-eye quartz
Rainbow agate, 119
" quartz, 112
Reconstructed rubies, 43
" turquois, 64
Red quartz, see quartz
" sapphire, see ruby
Refraction, 12
Rhinestone, see rock-crystal
Ribbon agate, 119
Rock-crystal, 17, 38, 91, 109, 112
" salt, 11, 19
Rose quartz, 17, 113
Rose topaz, see topaz
Royal agate, see obsidian
Rubellite, 64, 65
Rubicelle, 48
Ruby, 14, 15, 16, 17, 18, 21, 26, 32, 37, 39, 40, 53, 64, 107
Ruby, cat’s-eye, 39, 46
" spinel, see spinel
Saganite, see cairngorm
Saphir d’eau, see dichroite
Sappare, see cyanite
Sapphire, 16, 17, 20, 21, 37, 38, 39, 41, 42, 43, 51, 52, 93, 98
Sapphire, cat’s-eye, 39, 46
Sapphirine, 48, see false lapis
Sard, 121, 122
Sardoine, see sard
Sardonyx, 121, 122
Saxony topaz, 85
Siberian aquamarine, 53
" topaz, 85
Siberite, 64
Siderite, see false lapis
Silicified coral shells, see beckite
" wood, 120
Slave’s diamond, see topaz
Smoky-quartz, see cairngorm
" topaz, 16, 17
Spanish topaz, see yellow quartz
Specific gravity, 21
Sphene, 100
Spinel, 12, 14, 15, 17, 18, 21, 42, 46
Spodumene, 95, 96
Star ruby, 39, 45
Star sapphire, 39, 45
" topaz, 39, 45
Streak, 18
Sunstone, 46, 88, 89, 90
Syrian garnet, 80
Talc, 19
Titanite, see sphene
Tiger-eye, see crocidolite
Topaz, 8, 9, 16, 17, 20, 31, 32, 38,
42, 49, 50, 58, 84, 107, 111
Tourmaline, 13, 16, 17, 21, 32, 42, 53, 64, 107
Transparency, 30
Tree agate, see Mocha agate
Turquois, 9, 10, 17, 18, 30, 60, 107