3.05 ct Violetish Blue Oval Sapphire
This gemstone offers a distinctive violetish blue colour which is really gorgeous for a sapphire this size. A little over three carats, this gemstone is worth a second look.
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.