Centering an oval tourmaline measuring app. 14.2 x 10.7mm, framed by sections of black enamel* and Single cut diamonds and diamond shoulders, all weighing app. 0.19ctw., fashioned in platinum. Circa 1915. Size 6.75*Although vitreous enamel forms a hard, durable surface, it is susceptible to chipping and breaking upon impact.**Some damage to enamel, sold as is.