Seller: minjama (1,610) 100%, Location: FLAXTON, Queensland, Ships to: Worldwide, Item: 323581955051 Made from the giant clam shell this ring has a weathered dry surface, an irregular shape and a hole for attachment, to wear around the neck. The large middle hole has been worked from both sides. These rings are used for the purchase of wives, pigs, canoes, etc. Dates to the early 1900's. Missionary collected mid 20thc. Meas: outside diameter - 9cms, inside diameter - 4.5cms.