some time after its discovery. In the trade at present this variety of garnet commands a higher price than any other.
Varieties
of the lime-aluminium garnet occasionally appear in gem-stone
commerce. Lime-aluminium garnet has a hardness of 2.7, and a specific
gravity of 3.55 to 3.66. Its colours are white, pale green, amber,
honey, wine, brownish-yellow, cinnamon, brown, and pale rose-red. The
varieties include essonite and cinnamon stone, the latter often
improperly called, by merchants, " hyacinth." The gem cinnamon stones
come chiefly from Ceylon; they are of a cinnamon brown, or range from
that to a deep gold colour tinged with brown. Gros-sularite includes
the pale green, yellow to nearly white, pale pink, reddish or orange,
and brown kinds. Romansovite is brown. Wilnite is yellowish-green to
greenish-white. Topazolite is topaz, to citrine, yellow. Succinite is
amber coloured. There are two kinds of calcium-iron or green garnets:
The demantoid, from the Ural Mountains, Siberia, has a hardness of 6.
to 6.5; specific gravity, 3.83 to 3.85. Deman-toids have a rich green
colour and when clear &nd flawless are beautiful lustrous gems; the choicest are called " olivines." The other green
