Celtic Cross Signet Ring. Platinum Style Surgical Stainless Steel with 18kt Gold Plating. Comfort Fit. Unique and Large Signet Ring designed by Wolf&Jens exclusively for GestaltCouture. 18mm x 16mm size tapered to 9mm. Celebrity Style with hammered accents. Solid Platinum Style 316L Surgical Steel with 18kt gold plating. 1 oz weight (28.5 gr.). 100% Satisfaction Guaranteed.