Sleeping Beauty turquoise - the distinctively clear, robin's-egg blue variety from the now-closed Sleeping Beauty mine in Globe, Arizona - set as a solitaire in rhodium over sterling silver. The mine's closure has made genuine Sleeping Beauty turquoise increasingly difficult to source, adding a rarity dimension to what was already one of the most visually distinctive turquoise varieties: no matrix, no veining, just pure, even sky blue. At 0.38 inches long by 0.31 inches wide, not sizeable. The ring that belongs in a turquoise collection precisely because this specific material is becoming harder to find. A piece with both aesthetic and provenance appeal.