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Identity Help100% Fake Turquoise or Stabilized?

1st Mar 2021 00:12 UTCAhmed Syed Shah

Hello,

Someone sold me this ring. I took a hot knife and as you can see in red two burn marks appeared. Smelled like plastic.

Now my main concern is that is this stone 100% fake or real stabilized?

I have the acetone test with no color coming off on the q-tip. The surface has ridges where my fingernail can get stuck.

Supposedly this is a Iranian turquoise.

Any help would be appreciated.

Thank you.

1st Mar 2021 00:14 UTCAhmed Syed Shah

Back of the ring.

1st Mar 2021 01:44 UTCKeith Compton 🌟 Manager

If it is rock underneath, it most likely had a coating of some sort such as plastic - opal triplets for example have a clear glass, quartz, or plastic capping in the shape of a dome. The clear capping gives the stone a nice cabochon shape. Cheap ones are plastic/acryllic. Also maybe stabilized with some sort of plastic.

Of course the whole may be plastic/artificial.

1st Mar 2021 04:31 UTCAhmed Syed Shah

At this point what can be done to ascertain what this stone is? Should I just put into a flame and see what happens?

1st Mar 2021 16:10 UTCMaxwell Hain

You already did the a hot point test to prove that it is stabilized, there is no reason to do anymore flame tests unless you want to destroy the piece even further. I personally would of made the test spot as small a possible, there is a many people here that forget that destructive tests might be acceptable for minerals, but they are a last resort in gemstone identification including treatment. If you have a question what it might be, get a refractive index reading on a refractometer. I have no reason to think anything other than impregnated turquoise at this point.

1st Mar 2021 16:54 UTCAhmed Syed Shah

Thank you Keith and thank you Maxwell for the help.