The Topaz
Topaz is a gemstone of all colors, and its most valuable color is a golden orange-yellow, called "imperial topaz". Topaz is commonly thought of as a sky-blue gem, but it was not until this century that blue topaz became widespread on the gem market. Natural blue topaz with a deep hue is very uncommon in nature; colorless to light hued stones are heat-treated to achieve the blue color. Likewise, topaz rarely occurs naturally in pink; virtually all pink topaz is heat treated from yellow or brownish material.
Topaz of the best known gemstones. Even its name sounds like something exotic and fabulous from The Arabian Nights, or poetic like "silken Samarkand". In fact its name is so popular that most of the owners of a citrine claim to own a topaz! The name is believed to have derived from the Greek work topazos, the ancient name for St. John’s Island in the Red Sea, or from the Sanskrit tapas meaning fire.
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