tiful
in the world. Although they are not transparent enough to be of value
to cut into gems, yet if obtained in sufficient quantity, they would be
useful for watch jewels. Beds of nearly pure red garnet rock, from 5 to
25 feet thick, are sometimes met with in the gneiss at St. Jerome,
Que., and in quartzite in Rawdon and Marmora Townships, Ont., and at
Baie St. Paul, Que. Some small pieces would afford gems of little
value, but the stone is of considerable use in the arts as a grinding
material and for sandpaper. The large red garnet, disseminated through
a white oligoclase gneiss, at Lake Simon, would, not afford gems, but
if polished with the rock would afford an ornamental stone. An-dradite
garnet is found on Texada Island, B. C, in fair crystals, but not
suitable for jewelry. Essonite, cinnamon-colored garnet, is found in
small crystals in Grenville, Que., but not of gem value, and in fine
crystals, associated with idocrase, in Wakefield, Que. But few of these
would furnish even small gems. Gros-sularite, white lime-alumina
garnet, is found in Wakefield and in Hull, Que., in large quantity, in
veins lining the crystalline limestone, and associated with essonite,
idocrase, and pyroxene. This is the most remarkable locality for this
mineral, superb crystals 2 inches across having been found there, as
well as groups of crystals a foot across. In color the crystals vary
from colorless to light yellow and light brown, and some of them are
transparent enough to afford colorless gems of from 1 to 2 carats in
weight. Melanite, black garnet, is found in Marmora, Ont., but it is
not used for jewelry. Ouvarovite, or green chrome-garnet, found in
Orford, Ont., yields the most beautiful known specimens of this rare
mineral. The crystals, which are transparent dodecahedrons, rarely
over 1/8 inch in diameter, and of the deepest emerald-green color, are
found lining druses in cavities of crystalline limestone, often on the
chrome pyroxene and associated with millerite. If it were not for the
small size of the crystals, it would be a gem of the highest rank. A
few crystals have been found in Wakefield, some of which rival in size
any that have been discovered, the largest measuring nearly 1/3 an inch
in diameter. They are of a fine green color, but opaque, and sometimes
have a yellow center.
Rock-crystal is found in many localities of Canada,
