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Heat Treating Blue Sapphire


#1

Hi there

I recently acquired a batch (200 carats) of 1-2 carat blue sapphires. They are currently semi-translucent. I sent a batch of 20 pieces or so to Sri Lanka for heat treating, and about half of them turned out excellent, gem-quality sapphire. Unfortunately, the process they used was hardly scientific, and was therefore unreliable from one batch to the next. Combined with concerns about theft, I am looking for another avenue for heat treating without purchasing my own equipment.

The mine I buy from can supply a few hundred carats every few months, and I have a ready market for all the gem-grade sapphire I can produce — I’m just missing a suitable heat treatment option. Does anyone here heat-treat or know someone that could provide this service?

Thanks in advance!

Jason


#2

Hi Jason, I have sent you some information on heat treaters in Rubyvale sapphire fields Qld Australia
hoping it will help


#3

I just saw your PM. Thank you very much for the referral! I will definitely be giving them a call.

Best!

Jason


#4

No worries Jason, I will be sending some of my own sapphires to him shortly as well


#5

Hi can you telling us the name of the business in Sri Lanka so other do not use them
Regards
Ed


#6

Hey SydP,

Just heard back from the group in Rubyvale. Super helpful, but unfortunately they specialize only in Australian sapphires. My sapphires require an oxidation/reduction process that Austrailain sapphires do not. Too bad, they seemed nice.

Thanks again for the referral!


#7

Hi Ted Themelis in Thailand is an expert in treatment of sapphires, have a look at his website
www.gemstonetreatment.com details and contact information on the site
Cheers
Graeme Petersen F.G.A


#8

Sorry web site is www.gemstonetreatments.com
Regards
Graeme


#9

Hi,
Try this guy he is very good and also an excellent cutter. Ahmed Shareek contact him on crescentgems@gmail.com he is a nice guy.
Chris


#10

I am equipped to heat treat with whatever ramp speed you’d like, and able to control atmosphere all the way from >99% down to <1% O2 present. Most treaters attempt to achieve a “reducing environment” simply by scavenging oxygen with charcoal, and call “oxidizing” simply atmospheric oxygen concentrations.

You can reach me at encrypsis@gmail.com