Joined: Sun Jul 15, 2012 6:29 pm Posts: 321 Location: Los Angeles, CA
I found this website and there is some specific info on the cooking temp of corundum (near the center of the page) http://www.gemstonebuzz.com/heating
i'm not very familiar with this site. it doesn't look great. especially if the forum is any indicator. does anyone know if they grabbed this from a book on treatments?
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