826 THE POPULAR SCIENCE MONTHLY. 



The tourmalines include a dark -red gem (rubellite) of six carats' 

 weight, and good color ; two light-red ones of one half carat each, and a 

 fine dark-blue one (indicolite) of three eighths carat ; four long bottle- 

 green (called Brazilian emeralds) of two carats each ; a half-carat white 

 achroite ; two olive-green stones of two carats each ; and two sections 

 of green crystals that have red centers. This difference of color be- 

 tween the outer and inner crystals is peculiar to tourmalines, as many 

 as three colors being found in one crystal. All these are from Bra- 

 zil. The well-known domestic localities are represented by an ob- 

 long, table-cut, light-green stone from Paris, Oxford County, Maine, 

 that once held a conspicuous place in the collection of Dr. Joseph 

 Leidy, which, unfortunately, had to be scattered. From Auburn, 

 Maine, a locality quite recently discovered, we have a one-carat blue 

 indicolite, two lavender-colored stones of one carat each, a light 

 emerald-green stone of three quarters of a carat, and as handsome as 

 an emerald by artificial light, and also a suite of several dozen loose 

 crystals of various colors. The neighboring two-carat yellow and 

 three-carat yellowish-brown cut stones are from Ceylon. The fine 

 two-inch grass-green crystal and one-inch bluish-green crystal are also 

 part of the treasure brought home by Professor Dana from the Wilkes 

 Expedition of 1838-'42. 



A six-carat blue and two-carat sherry-colored topaz from Siberia 

 are exceedingly brilliant, but the domestic reputation is well sustained 

 by the cinnamon-tinted fifteen-carat cut stone from Pike's Peak, 

 Colorado, which is not surpassed in beauty by the brilliant white four- 

 carat (Minas Novas) from Minas-Geraes, in Brazil. A series of crystals 

 that have been "heated," follows, varying in color from dark pink fad- 

 ing into white according to the degree of calorification. 



Among the garnets are ten flat, brilliant cut stones, four car- 

 buncles, and six rose-colored, from Bohemia ; six Tyrolese red gar- 

 nets, two essouites (usually sold as hyacinths by the jewelers), four 

 carats and a quarter carat from Ceylon, and a series, cut and uncut, 

 from New Mexico, which furnishes the finest garnets in the world in 

 point of color. In addition to these we notice a two-carat demantoid 

 (green garnet or Urnlian emerald) from Bobrowska River, Syssersk, 

 in the Urals, and a brownish-green one-carat stone from the same 

 locality. 



From New Mexico we have a fine yellowish-green peridot or 

 olivine, called chrysolite by the mineralogist, but not by the jeweler, 

 and known as " Job's Tears " locally (from their pitted, tear-like ap- 

 pearance), while the Orient is represented by a beautiful olive-green 

 cut stone. 



From the zircons or jargoons we may single out for remark a 

 number of small cut stones, yellowish-brown, pink, bluish-green, and 

 white, the latter color being often produced by heating. Stones of 

 this kind were at one time used for incrusting watches, which were 



