Ceylon Blue Sapphires

A blue sapphire mined in Sri Lanka, the island once called Ceylon. Ceylon blues are known for a bright, medium blue with high transparency, from cornflower to royal blue. They are natural stones, sold heated or unheated, and a laboratory report confirms the origin.

Both are trade names for a range of blue, not laboratory grades. Cornflower blue is a medium, bright, slightly violetish blue, the colour Ceylon is famous for. Royal blue is deeper and more saturated, with a darker tone. Neither is better by definition: cornflower stays brighter in low light, royal blue reads richer.

Not better. Rarer. Heat brings out the colour in stones that need it, and an unheated stone simply never needed it. When the report confirms no heating, buyers pay roughly two to five times more for that rarity. Beauty is still judged stone by stone.

Most sapphires on the market are heated, whatever their origin. It is a stable practice that goes back centuries, and the trade accepts it as long as it is disclosed. Sri Lanka also produces a good share of stones fine enough to sell unheated, which adds to the island's standing.

Any serious one should be, and ours all are. We use independent labs: TGL (GIA alumni), Guild or GIC. The report states what the stone is, whether it was treated and, where tested, its origin. If a seller claims Ceylon with no report, treat it as marketing.

From a specialist who shows certification and states treatment plainly. That could be Colombo or Ratnapura if you can travel, an auction house, or an origin-direct dealer like Crestonne. Every stone in our collection is certified, bought at the source, with its report number published.