Blue topaz is light brown or colorless when mined but turns blue when exposed to light or heat. The largest producer of topaz is Brazil. A vividly colored, beautiful stone, blue topaz usually has good clarity. Blue topaz is one of the birthstones for December.
Topaz occurs naturally in shades of blue, orange, brown, green, pink, beige and red. Colorless topaz can be treated with irridation to produce a wide range of blue shades. Most topaz is found in Brazil, Nigeria and Sri Lanka.One of the most widely used gemstones, blue topaz is one of the accepted birthstones for the month of December, the Texas state gemstone and the anniversary stone for the fourth year of marriage. It is also said to be the gemstone with the widest range of curative powers.
Topaz occurs in a range of different colours, but the blue stones are particularly popular. They may be produced by heat-treating colourless topaz to achieve a stone almost indistinguishable from aquamarine. Blue topaz is one of the birthstones for those born in December. Topaz occurs in some igneous rocks and alluvial deposits and is available almost worldwide.