This sterling silver Bleue Burnham The Burnham sapphire signet ring is inspired by a design Bleue's grandmother used to wear. Handmade in London, it showcases a blue oval cut sapphire surrounded by 10 round cut stones on the circular face. It boasts an engraved texture, a polished finish and has British hallmarks on the interior edge. This Bleue Burnham ring is no hidden gem. We'll be showing it off at every given opportunity.