| 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.
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