|
|
DIA
Diaphaneity of gems, 19. Dioscorides, mention of coral, 216. Double cutting of brilliant, 66 ;
form of, 73. "Doublets," false gems, 218, 219. Dresden (Mr.), account of a large
diamond in his possession, 85. Dyshnite, 119.
E
LECTRICAL properties of gems, 16-18 ; of the diamond, 50.
Emerald, in High Priest's breastplate, 36, 40, 44 ; account of, where found, &c. 129—137.
Emerald, oriental, 115.
Emery, 102.
Essonite, variety of garnet, confounded with jacinth, 140 ; account of, 142, 143, 146.
Euclase, found with topaz in Brazil, 126.
Eugénie brilliant, account of, 82.
Eyestones, jewellers' name for onyx, 163.
F
ACETS in diamond, formation of, 67, 68, 72. Florentine brilliant, account of, 82. Fusibility of gems, 19.
G
AGATES, ancient name of jet, 208. Galen, mention of jasper, 175. Garnet, spinel mistaken for, 121 ;
account of, where found, &c.
141-147. Gems, definition of, 1 ; where
found, 2 ; requisites for value,
3 ; material of, 3 ; used for
medical purposes, 31. Goepert, mention of amber, 2II.
|
JAD Golconda, mines of, 54. Grossularite, variety of garnet, 142, 146.
H
ARDNESS of gems, 6. Hauy, Abbé, work on gems,
17· Hebrew names of gems, 22, 34-
47·
Heliotrope, 175.
Hercenite, 119.
Herman, diamond cutter, a.d. 1407, 64.
Herodotus, mention of gems, 25.
High Priest, stones in his breastplate, 21, 22, 38-47.
Homer, mention of gems, 23.
Hope diamond, account of, 84.
Hyacinth, in High Priest's breastplate, 43 ; account of, where found, &c. 139-141 ; game: sold for, 146.
Hyalosiderite, variety cf chrysolite,
177. Hydrophane, variety of opal, 183, 185.
I
DENTITY of gems, means of ascertaining, 216-219. lndecolite, variety of tourmaline,
147-India, diamonds found there, 54 ;
diamond washing in Sumbal-
phore, 55 ; diamond cutting, 66. Isidorus, mention of sapphire, in ;
emerald, 134.
J
ACINTH, spinel
mistaken for, 122 j account of, where found, &c. 139-141; girnet
sold for, 146. Jade, or nephrite, 209.
|
|
