This is a  Natural Green Prehnite weighing  60.00  carats (27.0 mm x 20.50 mm x 13.2 mm.) It is oval shape and would make a great pendant, or even a big ring.   This was part of my personal collection which I never had mounted. I hope the winning bidder enjoys it as much as I did. The  Green Prehnite - Oval  cabochon Cut Styling Prehnite  stone is simply breathtaking !   Prehnite Stones and amazing Beauty that the pictures do not show , - you are going to Love this Prehnite. Retail  Value:  550$