Pioneer Swirl is antique glass I have found out in the woods at the old Pioneer furnace. This slag dates back to 1857 and no longer can be found. Here is a premium example of Pioneer Swirl exhibiting parallax effects of the banding.
The stone is polished all around including the back to show the depth all of the swirls. Best effect happen under direct light!
Sterling Silver 18” necklace
stone dimensions:
40x26mm