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Sky BlueTopaz is one of the jewellery industries most popular gemstones and lends itself to both inexpensive jewellery because of its price, but also larger fashion statement pieces because of its availability in larger sizes. Sky Blue Topaz starts out as colourless or white Topaz and is then after cutting, put through a process of treatment that converts it into the sky blue that we are so familiar with. This White Topaz is sourced from many countries but Nigeria, Sri Lanka and Brazil feature prominently. Sky Blue is treated by Gamma irradiation and then heat. This does not render the material radioactive and Gamma irradiation is used widely in industry especially to sterilize medical supplies as well as in radiotherapy which is used to kill cancerous cells since it does not damage healthy cells. Natural blue Topaz is rather rare but does occur, however usually in lighter blues. Naturally coloured Blue Topaz is found in Brazil, Russia and also the USA among other locations and is considerably more expensive than the standard treated variety. All of our Sky Blue topaz has undergone treatment and is completely safe and the colour is permanent, |
