Specialists in Gem Heat Treatment(All type of sapphires) Mr.
Ranjith Uduwara has followed a gemology course , which was conducted by Gem & Jewellery Research & Training Institute (GJRTI) in 1995. As experience in gem heat treatment for 22 years he is a specialist in enhancement of color clarity and value of all types of sapphires Here are the gems for heat treatment. Ottu Milkey geuda Ruby geuda Silkey geuda Dun geuda Silkey yellow Diesel geuda Bluish Ruby