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 Topaz is the Texas state gemstone as well as the birthstone for the
month of November. It occurs naturally in many colors including blue, orange, brown, green, pink, beige and red. Colorless topaz, a common variation, can be treated by irradiation to produce a wide
range of shades of blue. Thus treated, blue topaz is one of the most popular and widely used of all gemstones.
Blue topaz was adopted as the state gemstone as the result of legislation approved March 26, 1969. The same legislation also
named petrified palmwood as the state stone.
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