Medieval Ring Found by Detectorist in Norfolk Field London, 12 Mar (ONA) --- A rare Medieval bishop's ring found by a retired firefighter in a Norfolk field is expected to fetch up to USD23,000 at auction. The gold ring, which has a central hexagonal cabochon sapphire with two emeralds and two garnets, was uncovered by detectorist Mark Sell, 63, in King Row, Shipdham, in 2019. The ring, which dates from the late 12th to early 13th Century, will go ...