Topaz (Brazil) custom cut @ The Cutter’s DeskTopaz is a beautiful gemstone that is most commonly seen in jewellery as a light blue sky blue. Topaz is one of the gemstones that is almost always treated and the treatment is widely accepted. Topaz is generally colourless, light brown or light blue when it is mined out of the ground and is then usually treated via irradiation, which induces the beautiful blue colour in the gem. There are three common blue colours; Sky blue , Swiss blue and the darkest colour, London blue.
The piece of rough that I started with was a London blue Topaz with a nice flash of green. The shape of the rough told me it wanted to be cut as a square shaped stone.
I cut it with a brilliant bottom (like a diamond) and polish it up with 50,000 grit diamond paste.
Lastly flip it around and cut the top and this is the result. It is beautiful!