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Heat treating Montana Sapphires

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Author Topic: Heat treating Montana Sapphires  (Read 802 times)
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« on: August 15, 2014, 04:27:51 pm »

It's better to send them to a commercial heat-treater.  It's not usually a do-it-yourself procedure because it requires very expensive specialized ovens that take the corundum to near-melting temperatures, far higher than can be achieved by ovens for metal casting or ceramics.  Also, a different process is needed for treating sapphires from different localities due to differences in chemistry. 

There may be other suitable treaters but here's one I've used:!heat-treating/c1l2w

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