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Topaz

Topaz is a rare, vitreous silicate that can be found in any color on the spectrum. It is found in small quantities in many parts of the world such as Sri Lanka and Brazil, but since it contains fluorine, it is still very rare. Its chemical composition is Al2SiO4(F,OH)2, with a large variety of ionic impurities that give topaz its myriad color range.

Chemical Formula

Al2SiO4(F,OH)2

BirthStone Month

November

Gemstone Mineral

Topaz

Hardness

8.00

Specific Gravity

3.500 - 3.600

Double Refraction

1.607

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