14 Karat Blue Sapphire Cabochon Ring. The ring features a bezel-set blue sapphire. The sapphire measures 9mm x 7mm and the ring size is 7. The ring has a smooth shiny finish and a tapered band. The four-pointed star has good presence with light. Stamped on the inside of the band is 14K. The total gold weight of the ring is 10.2 grams.