This is a beautiful piece of Yellow-Green Prehnite, one of my favorite stones!
This specimen has it's natural surface on the top, and polished on the bottom and sides.
The ring in a WIDE BAND, at 15mm/ 5/8" , low dome sterling silver. It's a comfy fit for a wide band, nice and slim, not bulky. The setting is 17mm x 20mm x 5mm or 5/8" x 3/4" x 3/16".
Size 8.5 ready to ship. One of a kind that cannot be resized.