Help! Real or Fake?

I got these turquoise s from a friend who said he bought in Thailand, however the turquoise seems wrong especially B. Thank you I will appreciate any help.
A

B


C

D

E

F

G

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Welcome to the forum, glad to have you here. All of it looks like turquoise except for that last piece. Chinese turquoise I imagine.

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I also agree with Jason. Everything looks right for these to be Chinese turquoise, except for the last which is an imitation