9.75 Celestial Ruby Colosseum ring in 9 carat Yellow GoldInspired by the famous Roman Colosseum with golden archways surrounding a unique 9. 75 carat Celestial Ruby, all in solid 9 carat Yellow Gold. The Ruby measures 18. 70 mm x 10. 10 mm x 5. 12 mm and totals 9. 75 carats in weight. And this ring comes with its own Jewellery Valuers Company Ltd valuation for verification of the gems and metal quality for insurance purposes.