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 Post subject: Heating yellow sapphire
PostPosted: Sun Dec 31, 2017 12:38 pm 
New to the Forum or The Quiet Type

Joined: Sun Dec 31, 2017 9:29 am
Posts: 1
Could someone tell how to heat a yellow sapphire from Sri Lanka?

It's a faceted 10 carat unheated sapphire with lab report. The color are already perfect considering it's a well saturated "Orangy Yellow" but it has a "feather" which I don't like.

I've read some reports indicating it should be heated in a reduced atmosphere. Is it possible to turn it into an Orange sapphire? How? Temperature? Time? What temperature will dissolve the feather?

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 Post subject: Re: Heating yellow sapphire
PostPosted: Mon Jan 01, 2018 1:56 am 
Gold Member

Joined: Tue Jul 02, 2013 9:00 am
Posts: 1263
Location: Wylie Texas but in Alaska for a while
I cannot help directly, but I remember a few threads on heat treating. You can try searching for them. Good luck.

I woulod love to see a picture.

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