10.29 ct Cushion Blue Sapphire
A stunning 10.29 ct cushion blue sapphire in a vibrant royal blue colour. This beautiful gemstone would make a perfect ring or pendant especially if paired with a couple of diamonds.
More care is needed with treated stones.
Sapphires can be treated to improve colour by a process called diffusion. Older stones treated in this way may only have treatment near the surface, so if you become aware that you or a customer has a stone treated in this way avoid repolishing.