Victorian style filigree ring measuring 18mm wide at the widest point and fully adjustable. Choose antiqued silver or antiqued brass. In the center is a 10x8mm oval aventurine cabochon. Aventurine is medium green with a metallic iridescence caused by fuchsite (green mica) inclusions. The look of the stone you receive may vary slightly from the one pictured. I do not recommend wearing this jewelry while bathing or swimming although simple hand washing is fine. Be sure to search my shop for other matching stone jewelry. For other aventurine items check out this listing: https://www.etsy.com/listing/1027169859/aventurine-stone-vintage-style-necklaces Matching earrings: https://www.etsy.com/listing/95714133/aventurine-and-brass-earrings