Bell & Bird Ring No. 3956Bell & Bird No. 3956 Sapphire and Enamel Ring A cornflower blue sapphire accented with gray enamel creates a play of subdued colors. The stone is certified at 5. 17 carats, of Ceylon origin, and free from any treatments. Traditional vitreous enamel is meticulously applied to the sides and shoulders of the ring, a painstaking process. This ring is one of a kind. Rings with enamel bands must be worn with some care as enamel is similarly hard to quartz