I''m going to buy a Tacori setting with yellow diamonds. I would imagine they would use non treated yellow diamonds, but is there a way that I can check myself when I look at them? Someone please help me as I will be ordering it soon.
You need sophisticated gemological equipment to differentiate between treated and non-treated fancy color diamonds, as well as between lab created and natural fancy color diamonds.
Your best insurance is to get a bill of sale stating that the diamonds are natural and non-treated. Not many companies are going to be deceptive about something like that. It would be corporate suicide.
If you still would like further assurance, you would need the assistance of a serious gemologist, preferably with an SAS-2000 or FTIR spectrophotometer. I'm not receiving my SAS until the latter part of this year, so I would refer you to Marty Haske of ADAMAS laboratories in the meantime.
Hera,
There is no way you can tell if the yellow is natural or treated. Like Rich said, get it in writting that your diamonds are natural yellow color and not treated.
Send us a picture when you get your ring. It sounds nice!
I assume the term "melee" refers to smaller size diamonds? The diamonds in question will be two ~.15 size diamonds. Does it matter whether the letter stating they are natural diamonds comes from Tacori or from the authorized dealer?