Ceylon blue sapphires are prized for their velvety cornflower to royal blue hues. Browse natural stones from Sri Lanka and selected origins worldwide — compare colour, carat, treatment and certification on every listing.
Blue is the colour most people picture when they hear “Ceylon sapphire”, and Sri Lanka has supplied these stones to the world for centuries. Fine Ceylon blues run from a soft cornflower to a deep royal blue, often with a velvety quality that sets them apart from material of other origins. Most blue sapphires are heat-treated — a stable, accepted practice that improves colour — and unheated stones with strong colour are correspondingly rarer and more expensive.
Comparing blues is best done in daylight rather than under a single shop light, and the best stones hold their colour as the stone moves; too much grey or violet flattens the blue and reduces value. Ceylon blues are commonly seen from under a carat to five carats and beyond. For any significant stone, confirm treatment and origin with a laboratory report from a recognised gem testing lab.
