4.55 ct Violetish Blue Octagon Sapphire
You can tell that this gemstone is special just by looking at its colour and cut. Add a metal ring and a imagination and you’ll have something very special to keep.
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.