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PAR
P
ARASITE, found with emerald in New Granada, 133. pasha of Egypt diamond, account of, 83.
pearl, swallowed by Cleopatra, 27 ; account of, 187—195 ; value and discrimination of, 196-201 ; false pearls, 219.
pebble, 154.
Peridot, 176-178.
Peridot, oriental, 115.
Peruggi, or Peruzzi, introducer of double cutting, 66.
Pierre de cannelle, French name for cinnamon, 160.
Pietra dura, jasper used in, 174,
Piggott diamond, account of, 84.
Pimelite found with Chrysoprase, 162.
Pitdah, or topaz, description of, 39.
Pitt diamond, account of, 81.
Plasma, variety of chalcedony, 169.
Plato, mention of gems, 24.
Pleonast, 119.
Pliny,
mention of gems, 25; ruby, 107 ; sapphire, 111 ; topaz, 129 ; emerald,
133; beryl, 138; al-mandine, 145; carbuncle, 147; amethyst, 159;
carnelion, 1685 agate, 172; jasper, 174; heliotrope, 175 ; turquoise,
182 ; opal, 186; pearl, 195 ; lapis, 205; amber, 211, 212; coral, 216.
Polarization of light in gems, 1012.
Polar Star diamond, account of, 81.
Polishing, diamond, 68 ; coloured stones, 97.
Polo (Marco), mention of balas ruby, 121.
Portaleone, his work " Shilto Hage-borem,'' on value of diamonds, 91.
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SAR Portuguese diamond, 85 ; supposed
to be a white topaz, 128. Pyrope, or Bohemian garnet, 142,
143; 145
Q
UARTZ, varieties of, 151-176.
R
EFRACTION of light in gems, 10—12; in the diamond, 49.
Regent or Pitt diamond, account of, 81.
Rock crystal, sold for topaz, 124 ; account of, where found, &c. 153-156.
Roman, ancient, taste for gems, 26.
Rose diamond, 70 ; form of, 76 ; value, 95.
Rubelite, variety of tourmaline, 147.
Rubicellc, 118, 120.
Ruby, account of, where found, &c. 102, no ; garnet made to imitate, 145.
Russian treasury, diamond in, 85.
S
T. STEPHEN'S STONE, variety of chalcedony, 169.
Sancy diamond, cut by Van Ber-ghem, 65 ; account of, 83.
Sapphire,
its colour, 9 ; mentioned in Scripture, 22; in High Priest's
breastplate, 36, 40; account of, where found, &c. no—114.
Sapphire, yellow, 115.
Sapphirine, 119, 169.
Sappir, or sapphire, description of, 40.
Sard, 166, 168.
Sardius, in High Priest's breastplate, 36, 38· ; Sardonyx, account of, 163—168.
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