Jewellery › Oxidised sterling silver taper back ring set with round brilliant diamond (inverted) Image 1 of 2 Image 2 of 2 Oxidised sterling silver taper back ring set with round brilliant diamond (inverted) $515.00 Size U available -or made to order for size. 4-6 week turnaround. 13.5mm width at front tapers to 6.5mm at back. Add To Cart Added! Size U available -or made to order for size. 4-6 week turnaround. 13.5mm width at front tapers to 6.5mm at back.