17th century Iberian diamond ring

A high carat gold ring, circa 1680 of bow-shaped form set with rose-cut diamonds in closed back settings. The shoulders are enamelled in black and the reverse of the ring is infilled with black and white enamel. The ring is size N and 1/2 [US 6 and 3/4] and in fine, original and most wearable condition.

£2900