Wilburt Denetdale Wilburt Denetdale A striking turquoise, with a design that combines straight lines and curves. The silver is thick and has a substantial feel. Turquoise Ring Approximately size 17 (Japan) Turquoise Length: Approximately 19.4mm Width: Approximately 14.2mm Please note that there may be slight variations due to amateur measurements. Please check the photos for the actual size. Hallmark W. Denetdale Sterling Navajo There is some blackening due to silver's characteristic sulfide reaction, as well as minor scratches from the manufacturing process and use, on the base and the stone due to being handmade.