Gemstone Color Enhancement
Sterigenics' Electron Beam and Gamma plant in Thailand is well known for its
gemstone color enhancement expertise. It is conveniently located near Bangkok,
one of the world's largest gemstone cutting centers.
Radiation processing can substantially improve the color of gemstones such as
topaz by creating changes in their crystalline structure.
Sterigenics can provide:
- High-energy electron beam processing can duplicate colors only nature
could otherwise provide. White topaz, for example, becomes Sky Blue
and London Blue topaz transforms to Swiss Blue when treated with
- Gamma radiation is used to not only enhance the color of topaz, to create
"Rich Cobalt Blue" topaz, but tourmaline, and other precious gemstones,
as well as the full spectrum of colors in quartz.
- Professional advice on the irradiation dose, and heat / time requirements, to provide the color required, for stones from mines
all over the globe.
- Irradiation processing
- Heat application
Contact Sterigenics Thailand for more information.
Tel: +66 2 637 8132