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Topaz
Chemical Composition Aluminum silicate with fluorine and hydroxyl.
Colour Colourless, yellow, brown, red, blue, and pink.
Refractive Index R.I. 1.60-1.62.
Durability Hardness 8
Crystal Structure Orthorhombic
Specific Gravity 3.50-3.57.
Sources / Occurrence U.S., Pakistan, Brazil, Russia, Mexico, etc.
Varieties

Imperial Topaz

Blue Topaz

London blue Topaz

Swiss blue Topaz

Sky blue Topaz

An array of colours resembling the sunset and the sea range from red, orange, peach, and pink, gold and yellow. The brilliant blue shade is rarely found in nature.

The rich reddish cognac colours and vivid pinks discovered in Brazil were used to grace the Jewellery of the 18th and 19th Century Russian Czarinas hence being called the 'Imperial Topaz'.

It is the enduring symbol of love and affection, brings long lasting friendship and ensures the fidelity of the one you love. When worn it is said to relieve negative emotions and brings friendship. According to an ancient myth, the Topaz was said to make the wearer invisible.

Topaz is the birthstone for November born and a talisman for the sign of Sagittarius and is the suggested gift for the 23rd anniversary.

Alternate Names of Topaz are, Sunela, Golden Topaz, Rubellite