Extra information: engagement ring - An engagement ring is a finger ring of no generally accepted form that is given by a man to his fiancée as a token of marriage engagement, in the manner of the earlier betrothal ring, and indistinguishable in form or style. In recent years such rings have normally been set with a gemstone, usually a diamond (or any stone other than the ill-reputed opal), as a solitaire, of varying sizes, cuts, styles, and cost, but in the 19th century some were set with a pearl. In the same century the custom arose in England of separate engagement ring and wedding ring, and in very recent years such rings have sometimes been made en suite as a matching pair of similar style. In recent years, antique gemstone engagement rings are rapidly gaining in popularity.