Modernist styled with flutes and scallops and made with 925 sterling silver. Reminded us of the Sydney opera House at first glance. Or perhaps waves rolling in from the ocean at high tide. Size 6 and weighs a hefty 10.9 grams. Signed ND which we believe is for Nida in Thailand. Other ND rings are attributed to Norwegian Design rings. We aren?t really positive but lean toward Nida based on similar rings. See photos. Very cool and interesting ring found at a recent estate sale. Will ship USPS with tracking to winning buyer.