Dorrie Nossiter (attrib.). No details on the http://www.dorrienossiter.co.uk/where-to-buy/dreweatts.html page. Dreweatt Neate sold an Arts and Crafts gem set silver coloured ring, attributed to Dorrie Nossiter, unmarked, the tapering head with wire scrolls and beadpoints (no photo), 24 June 2008, £260: pretty sure it's this one. A heart-shaped stone at the top. Sold by Dreweatt Neate.