The Kerr RingGeometric Solitaire Vintage Ring The Kerr features a brilliant cut natural diamond held by flared, split shoulders that create a bold geometric framing that makes it hard to date and totally unique. This design may be relatively small in carat weight but is exceptional in its design. The appraisal of the vintage ring is attached as one of the images; there you will find detailed information about the ring, as well as the appraised value of the ring at