Our classic half dome rings are hypo-allergenic gold-plated brass, and are manufactured in the USA. Offered in two widths in a full range of whole sizes. 3mm bands are available in sizes 4-12 and 5mm bands come in sizes 5-15 (Please note- quantities for sizes 14 and 15 are very limited). Also check out our wedding band sets for boxed size runs of the most popular sizes.