Topaz a November gem!
Topaz has a hardness of 8 on Moh hardness scale (1-10 where glass is No. 7).
Topaz is believed to have been named after a small island in the Red Sea named ‘Topazos’ where golden stones were found.
Topaz obtains much of its popularity from its beautiful colours and its status as a birthstone. Natural topaz colours include rare and valuable yellow/orange also know as Imperial topaz, pink, red, purple, and blue. The most affordable and frequently purchased is blue topaz that has mostly received its colour from treatment. The blue comes in three shades: sky blue, London blue and Swiss blue.
Topaz is found in many countries around the world including Brazil, Russia and the USA and is the official stone for the states of Utah and Texas.
In 1740, a 1640 carat gemstone named the ‘Braganza Diamond’ was mined in Brazil. This gemstone was set in the Portuguese crown. It was believed to be the largest diamond of the time and was also worn by King John the VI (1816-1826) as a suspended rough gem. The jewel is now believed to have been a colourless topaz and its present whereabouts is unknown..!