18k white gold and diamond ring

Seal ring with a border of 11 diamonds, total weight approx. 0.60 ct, surrounding a central diamond, weight approx. 0.15 ct, all brilliant-cut, H colour and "piqué" purity. The shoulders are engraved with diamond-shaped lines. 

Inner rim size: 20 mm; Front size: 19 mm; Total weight: 13 g