Ceylon Blue Sapphire

How to choose a Ceylon blue sapphire

Colour decides most of what a blue sapphire is worth. Judge the colour first, confirm the treatment second, and look at the price last. Do it in that order and the rest of this page makes sense.

Sri Lanka's gravels produce stones that are brighter and more transparent than most origins. That is why Ceylon blue reads as clear rather than inky, even at deeper tones.

Royal blue, cornflower, vivid: what the names mean

These are colours, not places. Ceylon says where a stone came from. Royal blue says how it looks. A single sapphire is usually both, and half the confusion in this market comes from treating them as rival grades.

Colour breaks into three parts. Hue is the blue itself, plus any violet or green leaning. Tone runs light to dark. Saturation is how vivid it is against grey. Saturation is where the money sits.

Neither is better. The trade itself disagrees on where one ends and the next begins. Put the royal blue cushion beside the cornflower oval on a daylight video and pick the one you want to keep looking at.

Heated or unheated

Most sapphires on the market are heated. It is permanent, it is normal, and a heated stone is still a natural sapphire. Heat is standard practice in the trade; hiding it is not.

Unheated stones are rarer, because the colour has to come out of the ground that way. That rarity is the whole premium. Across the stones listed here, unheated runs at roughly double the price per carat of comparable heated material.

Every stone on this page says heated or unheated, in the same size and colour as everything else on the listing. If a seller will not say which, that is your answer.

What Ceylon origin means, and how it is proved

Ceylon is the old name for Sri Lanka. As a gem term it means the stone was mined here, and it moves the price, which is exactly why it needs proof rather than assurance.

Origin is settled in a laboratory, by reading a stone's trace elements and inclusions against reference material of known source. Only a few laboratories do it properly. Every listing here shows the laboratory, the full report number and a link to that laboratory's own lookup, so you can check it before you spend anything.

Our stones come out of the Ratnapura and Elahera gravels and are cut in Sri Lanka. We buy at the mines and the gem markets ourselves. That is why we can name the district, not just the country.

What a blue sapphire costs, per carat

Price is quoted per carat, and it climbs faster than weight. Large rough is disproportionately rare, so a three carat stone costs well over three times a one carat stone of the same quality. Treatment and colour move it from there.

Those come from the stones on this page, not a market average, so they shift as stock moves. A certified unheated Ceylon stone priced far under this is worth a second look at its report.

Hard enough to wear every day

Sapphire is 9 on the Mohs scale, harder than any natural gem except diamond, and it has no cleavage plane to split along. Hard and tough, not just hard. That combination is why it is one of the few coloured stones a jeweller will put in an everyday ring without hesitating.

Any setting works, claws included. Clean it in warm soapy water with a soft brush. Ultrasonic is safe for a stone that is untreated or simply heated, never for glass filled or fracture filled material.

Blue is where most people start. The same reports and the same terms cover every Ceylon stone we list.