Great hallmarked art deco 14K Gold ring with two rows of small, faceted, sparkly diamonds: one row on each side lining a tall black onyx cone. Probably European. 18 diamonds in all. It is a size eight, but could be resized by a jeweler. Is stands over 3/8", or 11mm, tall above the finger. Marked "MG, 14K, 585, 4." Excellent vintage condition.