Страница - 83Страница - 85- Imitations of precious stones, [237-249]
- Imitations of pearls, [277-282]
- Imperfections, [111]
- Imperfections in corundum gems, [101]
- Imperfections in glass, [81]
- Imperfections in scientific stones, [104]
- Jacinth, [166]
- Jade, [128], [147], [175], [197]
- Jadeite, [128], [197]
- Jargoons, [166]
- Jasper, [128], [172]
- "Make" of diamonds, [205-207]
- "Make" of precious stones, [220]
- Malachite, [132], [148], [177], [199]
- Metallic oxides, [137]
- Mineral species, [133-148]
- "Mixed cut" stones, [236]
- Mohs's scale of hardness, [48-51]
- Moonstone, [44], [45], [131], [146], [176], [198]
- Morganite, [165]
- Occurrence of precious stones, [179-200]
- "Olivine" (see [Demantoid Garnet])
- Olivine, [83], [176]
- Onyx, [172]
- Opal, [44], [131], [139], [173]
- Ordinary ray, [16]
- "Orient" of pearls, [261]
- "Oriental" stones, [84], [156]
- "Paste" gems, [142], [237-241]
- Pearls, [258-276]
- "Peeling" pearls, [265]
- Peridot, [8], [130], [176], [198]
- Pink stones, [93]
- "Pinked" topaz, [250]
- Plasma, [172]
- Polishing of diamonds, [210]
- Polishing of precious stones, [218]
- Prase, [138], [172]
- Properties, definition of, [1]
- Purple stones, [94]
- Quartz, aventurine, [171]
- Quartz, citrine, [161], [171], [195], [196]
- Quartz gems, [45], [127], [171], [195], [197]