How to source a certified sapphire

Sapphire buying is more nuanced than diamond buying. Two stones with the same carat weight can sit miles apart in value because of colour, origin, treatment, cut and certificate lab.

Colour comes first

For blue sapphires, buyers often ask for "royal blue" or "cornflower blue", but those phrases are not always used consistently between labs and dealers. In practice, you want to judge:

• Hue: blue, violetish blue, greenish blue or mixed.
• Tone: too dark, too light or lively in the middle.
• Saturation: weak, medium, strong or vivid.
• Extinction: dark dead zones across the stone.

Photos help, but video and daylight comparison help more.

Treatment changes the price

Heat treatment is common and accepted in sapphires. Unheated sapphires command a premium, especially when colour and origin are strong. More invasive treatments, coatings or diffusion must be disclosed clearly and should price much lower.

When you enquire, ask: "Is this heated, unheated or treated in another way, and is that stated on the report or invoice?"

Origin can matter, but it is not everything

Sri Lankan, Kashmir, Burmese and Madagascan sapphires can all be excellent. Origin only creates premium value when the stone itself also has strong colour, cut and certificate support.

For valuable stones, a serious report from GIA, SSEF, Gübelin, AGL, Lotus or GRS can make a major difference. The right lab depends on budget, location and how much origin certainty matters.

How to brief Chaos

Use retail sourcing if you need a sapphire that is not obvious in current stock. Include:

1. Colour target, such as vivid blue, cornflower, teal or padparadscha.
2. Shape and carat range.
3. Treatment preference: unheated only, heat accepted or open.
4. Certificate preference.
5. Budget range and deadline.
6. Whether the stone is for an engagement ring, pendant, earrings or collection.

You can also browse current sapphire listings and enquire from a specific stone page if something looks close.