Jewellery › Diamond Single-stone Ring Image 1 of 1 Diamond Single-stone Ring £0.00 The old mine-cut diamond weighing approx. 1.80cts, to the plain platinum hoopSize N ½Reference. SN7254 Add To Cart Added! The old mine-cut diamond weighing approx. 1.80cts, to the plain platinum hoopSize N ½Reference. SN7254 You Might Also Like Diamond Single-stone Ring Edwardian Emerald and Diamond cluster Ring Georgian Diamond Cluster Ring Art Deco Sapphire and Diamond Cluster Ring Diamond Single-stone Ring by Boucheron