Tourmaline:
Tourmaline is found in a wide range of colors from vivid
pinks to
verdant greens to Caribbean blue. Tourmaline is dichroic which means that a
single gemstone displays two colors.
Tourmaline is the alternate
birthstone for
October. Tourmalines are mined in Brazil, Afghanistan, East Africa, and the
United States. Tourmaline rates 7 to 7 1/2 on the Mohs scale of hardness.
Enhancements:
Although cutting is the most basic enhancement method necessary
to display the beauty of a gemstone, there are many fascinating methods by which
man has demonstrated his ability to draw maximum color, luster, clarity and
brilliance from nature's earthbound treasures. A basic understanding of these
enhancement techniques will add to your appreciation of the beauty, durability
and value of the
gemstone jewelry
you already own, or plan to purchase in the
future. Dark blue,
blue-green, and
green tourmalines are occasionally heated to
lighten their color. Red
tourmalines (or
rubellite) and pink varieties are often
heated or irradiated to permanently improve their colors.
Tourmaline care: Do not use an ultrasonic cleaner. Avoid sudden temperature
changes, steaming and contact with cosmetics, hairspray, perfume or household
chemicals. Your
tourmaline jewelry may be cleaned with a soft-bristled brush or
a cloth with plain or soapy water.
