the cut and finish tell you that the person making the beads invested very little time or effort into them. The free-form shapes and tumble finish added to the turquoise (or lack of turquoise) color also tell a story of a low grade rock. I have seen this type of color and matrix in turquoise from Royston also Ajax and Easter Blue.......age is hard to tell, the natives have been mining these areas for hundreds of years....going by the general appearance and not seeing the close-ups of perforation wear, they could have been made a month ago. They could also be treated but it would be nearly impossible to tell from pictures. I personally don't believe these are antique or real old, I hope this helps