Here are the pics from the necklace. They are from Alaska, and the chain was sold to me as a Turquoise. The other peaces i buy them recently. They all were nice light blue/green/turquoise color, and they start becoming darker and black.
I bring them to one expert here, and he told me that they might not be Turquoise, and that might be Chrysocolla. Im not sure which one is.
But as you can see at the pics, they start becoming darker and almost black. Some of the beads are completely black.
Thank you for your help !