A sparkling gray diamond, flanked by a total of eight round cut sapphires in gradient shades of blue, cast in place in Polly's signature Halo style band of 18k yellow gold. -0.55 carat diamond. -Size 6 (This ring cannot be resized but can be special ordered in other sizes. Please contact us at info@ reliquarysf.com if you are interested in another size). Combining a background in sculpture with her training in fine art and jewelry at the Royal College of Art in London, UK-based artist Polly Wales utilizes a unique wax casting technique to create her one of a kind pieces that are perfectly imperfect, both rough and luxurious.