Colourless topaz is very common and it is this material that is typically treated to make the well known blue colour that is widely seen in jewellery.
Most Topaz is known simply by its colour i.e. Pink Topaz, however Imperial Topaz which is a reddish-orange and is the most sought after and valuable colour was named in 19th Century Russia. At this time, the Ural Mountains were the primary source of these stones and they were named after the Russian Tzar and his family as a mark of honour and respect.
Topaz can cleave quite easily so care is needed when cutting, setting and wearing. Current primary sources for this lovely gem are Brazil and Madagascar.
Description: Topaz occurs in a wide range of colours including various shades of yellow, orange, blue colourless and pink. Found in Brazil.
Hardness: 8 on Mohs Scale