Mystery stone?

panel bracelet marked NRS or NAS
Any thoughts on the stone?

I found some examples of Tibetan turquoise on a site called Tibet Archeology:
It’s just about as green as yours, and that’s some green Turquoise you’ve got there! Idk, maybe this will help. It’s definitely an interesting bracelet.

Hi Sandy, The stone is very green and appears to have a Deep brown matrix running through it much more beautiful in person I don’t think the photos captured it well. It does kinda resemble the photos you posted.

I love the brown matrix with the green in your bracelet! I’ll be interested to hear what others think.