Vintage 1920’s Art Nouveau Amethyst Cocktail Ring

I purchased this beautiful ring from Etsy. II wanted a vintage statement ring and I love it but I just haven’t worn it much and it’s larger than I want. I do not have any paperwork on it but I did have it sized to 4.5 by a jeweler and they tested it and verbally told me it was white gold. I am asking for the price I originally purchased it for and the price is firm.