Bell & Bird Sawtooth Three Stone Sapphire and Old European Cut Diamond RingThree stone old mine cut diamond ring. A 200 year old ring inspired several of the details in this design. The primary stone is a 3. 95 carat sapphire, Ceylon in origin, with no heat treatment. The sapphire is paired with two old European cut side diamonds weighing . 46 carats and . 56 carats. The approximate grade of the side stones are I color, SI1 SI2 clarity. Handmade in our 18k old gold with a simple band. Hand fabricated in our Texas workshop,