1,404 ct
The Star of Adam, the world's largest blue star sapphire, was found in Ratnapura in 2015.
For over two thousand years, Sri Lanka has produced sapphires prized for their bright cornflower blue and exceptional clarity. Learn what makes a Ceylon sapphire special, and how to buy one with confidence.
The Star of Adam, the world's largest blue star sapphire, was found in Ratnapura in 2015.
The Blue Belle of Asia, a 392-carat Ceylon sapphire, set a world auction record at Christie's.
The Ceylon sapphire in Kate Middleton's engagement ring, once worn by Princess Diana.
How long Sri Lanka has been trading fine gems, from Marco Polo's day to now.
Experts grade every coloured gem the same way. Colour first, then clarity, cut and carat, with origin and treatment confirmed on paper.
The biggest driver of value. The prized look is a vivid, even cornflower blue, neither too dark nor too pale.
How clean the stone looks. A few natural inclusions are normal; avoid cloudy or heavily included stones.
Controls sparkle. A well-cut sapphire returns light evenly across the whole stone.
Weight raises price sharply as stones grow. Always confirm origin and any heat treatment on the certificate.
Our in-depth guides for travellers buying Ceylon gems.
Real prices, certification, and how to buy safely at the source.
ReadA traveller's trust guide to avoiding scams and buying with confidence.
ReadHow Ceylon compares to Kashmir, Burmese and lab-grown sapphires.
ReadCome to the source in Ratnapura and choose a stone with an expert beside you.