Early 20th Century Sapphire and Diamond Three Stone RingEarly 20th century sapphire and diamond three stone ring, in 18k gold. The sapphire is an AGL certified 3. 67 carat, Celyon in origin, and no heat. AGL certified #CS 37933. The sapphire is paired with two old European cut diamonds. Currently a size 5. 25, there is an interior tension sleeve that can be removed, making it a size 6. If further sizing is required, please reach out for details.