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Mineral: topaz
Gem: blue topaz (london blue?)
Size:
Carat:
Cut: triangle
Origin: Brazil
General Info: The name Topaz is thought to be derived from the name Topazion, the old name for the island of Zebergit (St. Thomas Island) in the Red Sea. The Sanskrit word "Tapas" means "fire".
Additional Information
A triangular cur topaz that is likely irradiated to produce the blue color. There are many "unofficial" names for the blue, "sierra blue", "london blue", "electric blue", etc. They are said to refer to the shade of blue produced. They are marketing names and not defined by a true particular color.

Good native cut stone, uneven pavillion design, but little light loss, better than the average.