Rivista Italiana di Gemmologia #2: Available NOW in English - September 2017; See Gemological Articles below for full details!
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 Post subject: How to Burn Spinels Gem?
PostPosted: Tue Sep 19, 2017 12:53 pm 
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This is regarding the burn in method of spinel gems. what are the requirements for following;

1) The method to get the light color spinels from the dark colour spinels. (Ex - Oxygen, LP Gas Values and the time period)?

2) What is the optimum temperature in order to obtain ligh colour spinels from the dark spinels?

3) Is there any necessary to add chemicals or substances to the gem for the reaction?

Please reply anyone know about this......


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 Post subject: Re: How to Burn Spinels Gem?
PostPosted: Tue Sep 19, 2017 10:31 pm 
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Spinel and its Treatments:
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