by tourmaline from any other
locality. Some of the Maine tourmaline is of a delightful, slightly
bluish-green tint that almost approaches emerald.

KUNZITE. Spodumene, of the variety kunzite, comes from San Diego County,
California.

QUARTZ GEMS. Coming now to the quartz gems we find amethyst and citrine,
or golden quartz widely distributed so that only the localities that
furnish the better grades of these stones need be mentioned. Siberia and
Uruguay furnish fine amethyst. Brazil also furnishes large quantities
of very good quality.

AMETHYST. The chief charm of the Siberian amethyst lies in its large red
component, which enables it to change from a deep grape-purple by
daylight to a fine red by artificial light that is rich in red rays, and
poor in blue ones. The paler types of amethysts that were once esteemed,
probably for lack of the rich deep variety, become gray in appearance
and much less lovely under artificial light. India furnishes some
amethysts, and papers of "fancy color stones" containing native cut gems
from Ceylon, frequently contain amethysts, but Brazil, Uruguay, and
Siberia furnish the great bulk of the stones that are regarded as choice
to-day.

YELLOW QUARTZ. Citrine or golden quartz comes mainly from Brazil. The
"Spanish topaz" is sometimes the result of heating smoky quartz from
Cordova province in Spain. Our own western mountains furnish
considerable yellow and smoky quartz fit for cutting.

ROSE QUARTZ. Rose quartz of the finest quality comes from South Dakota.
Bavaria, the Ural Mountains, and Paris, Maine, have also furnished it.

AGATE. Agates of the finest types, such as carnelian and sard, come
principally from Brazil and from India.

OPAL. Opals now come most largely from Australia, the Hungarian mines
yielding but few stones at present. The fine black opals of New South
Wales are unsurpassed by any that have ever been found elsewhere. Mexico
furnishes considerable opal, and is notable for its fine "fire opal" or
"cherry opal."

JADE. Most of the jade of the variety nephrite that is obtained to-day
comes from several of the provinces of China or from Siberia or from
Turkestan. A dark-green nephrite comes from New Zealand.

Jade of the jadeite variety, which is harder than nephrite and more
highly valued, is rare. The best specimens come from Upper Burmah. It
is also found in China and in Tibet.

PERIDOT. Peridot, and the brighter olivine or chrysolite, while of the
same mine