Is my pendant Royston

Have a cool pendant that makes me think of a medicine man. I think it is Royston but would appreciate an opinion from someone more knowledgeable than me in turquoise identification. Thanks for sharing your experience.

It looks like Royston. Is the stone thin, can you see the backing right away?

The thickness seems to vary. I am attaching more pictures. It was raining here yesterday so some of my pictures weren’t the best quality.