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Heavenly City, gems of, 231 Heliolite, 150 Heliotrope, 173 Hematite, 134, 188 Hiddenite, 156, 157 Holy City, precious stones
of,
182 Hope Diamond, 26, 242 Hornblende, 134 Hornstone, 138 Hyacinth, 113,
194 Hyalina, 115, 122 Hyalite, 116 Hyalosiderite, 153 Hyalus opalinus, 115 Hydrofluoric acid, 213 Hydrophane, 116 Hypersthene, 134
I
Icy flakes, 206
Idar agate industry, 178
Ilmenite, 188
Imitations, 209
Improvements, 209
Indicolite, 95, 161
International Committee of
Weights and Measures,
302 Iolite, 189
J
Jacinth, 194
Jade, 143
Jadeite, 143
Jargons, jargoons, 194
Jasper, 173
Jesus Christ, 175
Jet, 189
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Job's Tears, 153 Jubilee Diamond, 56, 57
Κ
Kimberley, 39, 40 Kohinoor, 1, 26 Kunzite, 154 Kyanite, 95
L
Labrador, labradorite, 189 La Pellegrina pearl, 75 Lapidary, 195 Lapis-lazuli, 189 Largest and smallest pearls,
75 Lava, 190
------Vesuvian, 190
Lazurite,
189 Lenate, 190 Lepidolite, 155, 167 Leuco-sapphire, 92 Limonite, 134
Lithomancy, 232 Lodestone, 190 Lunaris, 148 Lynx Sapphire, 93
M
Magnetite, 190 Malachite, 190 Marcasite, 191 Marekenite, 191 Matura diamonds, 193 Mêlée, 208 Mexican Onyx, 180 Mica, 189
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