Heat Treatment of Aquamarines

Heat Treatment of Aquamarine loose sale price & Aquamarine Gemstone Information

As with many gemstones, the colour of aquamarine has almost always been improved by treatment of some kind. Heat treatment is used for aquamarines, to turn greenish, yellow or brown stones into a beautiful blue. The stones are heated to about 400 to 450 degrees Celsius, and the colour change is permanent.