How can you tell if it is real turquoise or not?

Question:

Answer: I disagree. Turquoise does not come in 'many' colors. Turquoise is an opaque, blue-to-green mineral that is a hydrous phosphate of copper and aluminium, Fakes are detected by gemologists using a number of tests, relying primarily on non-destructive, close examination of surface structure under magnification. I would take it to a jeweller who is a gemologist. Good luck! http://en.wikipedia.org/wiki/Turquoise#Imitations

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