Diamond ring, early 20th century. The intricately pierced and millegrain-stippled setting of this ring showcase the heights of technical excellence reached by jewellers in the opening decades of the 20th century, when the discovery of platinum enabled metal workers to create designed of unprecedented lightness and delicacy. The innovations of this style led to similar breakthroughs in gold metalwork, beautifully demonstrated by the lace-like white gold setting of this ring, perfectly complimenting the carefully set diamonds to create a beautifully sparkling statement piece.