Pear Shape Amethyst Ring Sz. 7-3/4

Set In Sterling Silver, Marked Thailand 925 Is This Huge Cushion Cut Pear Shape Amethyst Ring. Size 7-3/4. The Amethyst Measures Approx. 12 X 16 Mm. It Is Cushion Cut, Deep Purple In Color. It Is Set In Sterling Silver. I Bought This From Jtv. The Amethyst Is Surrounded By 25 Prong Set Stones That Are Probably White Zircon. Jtv Commonly Sets White Zircon As Accent Stones. I Am Not Sure About Them. This Ring Has Some Signs Of Wear Consistent With Use. It Is A Large, Bold Statement Piece. I Bought It From Jtv But I Didn't Keep The Paperwork. Questions? Please Ask.