A group of six diamond rings

A group of six diamond rings, comprising: one diamond full eternity ring, size K, British hallmarks for 9ct gold; a brilliant-cut diamond solitaire, size M1/2; a princess-cut diamond solitaire, size P, British hallmarks for 9ct gold; a brilliant-cut diamond ring in a bicoloured gold mount with rope twist detail, size L1/2, British hallmarks for 9ct gold; a diamond half eternity, size N, stamped 14K; and a solitaire set with a cushion-shaped diamond of brown tint, size R1/2, stamped 18K and PLAT; together with a ring set with five simulated diamonds, size N