750(18K) Rose(Pink) Gold. 750(18K) White Gold. Material750(18K) Yellow Gold. This is our regulation to compensate the item for lost and stolen. (Approx)9.75(USA) / #60(Engraved) / 20(Japan). This product is difficult to obtain and is priced at a premium.
eBay
This is a "classic model" ring with a nice square design. Ring width: 0.33cm (maximum width of one ring). Doing that is against U.S. and international laws. EU sizes, US sizes, JP sizes are listed in that order.
eBay