These are an impressive set with what looks to be carved stone or glass with bright foil or gold that runs thru the center. Definitely one of a kind stones. Much nicer that the photos too. Look close at the photo that is a closeup to see the detail of these awesome stones. 8-3 2016 Outstanding Foil Cufflinks Dante Gold Plate Large Jewellery Green Stripe Carved Stone Birthday Wedding Groom Gift Cuff Links