Laura Smith, Noonans jewellery expert, said: 'This form of medieval ring, with a principal cabochon stone, usually a sapphire, surrounded by smaller collet set satellite stones (garnets or rubies, and ...

A rare Medieval bishop's ring found by a retired firefighter in a Norfolk field is expected to fetch up to £18,000 at auction ...

"This form of Medieval ring, with a principal cabochon stone - usually a sapphire - surrounded by smaller collet set satellite stones (garnets or rubies, and emeralds), can be securely dated to ...