A Dainty Vintage 9ct Yellow Gold Ruby & Diamond Ring The front of the ring measures 3mm wide and features five round rubies and four very small round diamonds. UK Size: O 1/2 US Size: 7.5 Weight: 2.2g approx. UK hallmark for 9ct gold. assayed in London made in 1978. Condition: Very Good All items are pre-owned and may show light signs of use.