7.51 ct Royal Blue Oval Sapphire
ShareA brilliant 7.51 ct oval sapphire in a fine royal blue colour. This beautiful gemstone would make a perfect engagement ring especially surrounded by sparkling 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.