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. |