Ammolite and topaz sterling silver ring size 7

This is a pre owned ring from an estate purchase in excellent like new condition not showing any signs of use.  Genuine stunning ammonite square cut gemstone with mostly green and flashes of blue , turquoise, orange and a hint of red. White accent baguette stones test as topaz. Prong set in 925 sterling silver that’s plated with platinum or rhodium. Measures a size 7. Total weight is 4.02 grams. No found makers mark. Ammolite stone is likely from Canada and measures 11mm on each side. Photos don’t do this ammolite enough justice. Just when you think you’ve seen all the colors it offers , it flashes new hidden colors depending on the lighting. This is what I’d call an heirloom ring. Reasonable offers considered