Blue Diamond Engagement Rings

What Makes a Diamond Blue?

A trace of boron in the crystal turns a diamond blue. Natural blue diamonds are among the rarest diamonds of all, and the most famous, such as the Hope diamond, are blue. Their colour is usually a soft, greyish blue rather than a bright one.

Lab Grown Blue Diamonds

Lab grown blue diamonds bring this colour within reach. They range from pale sky blue to deep ocean blue, with an even colour across the stone, and cost a small fraction of a natural blue. See what we have in our blue lab grown diamond search.

Blue Diamond or Sapphire?

A sapphire is a different gem, softer than diamond, with a deeper but less lively blue. A blue diamond is harder and sparkles like a white diamond, with a lighter, brighter colour. If you want sparkle first, choose a blue diamond.

The Best Metal for a Blue Diamond

Platinum or 18ct white gold suits a blue diamond best: the white metal keeps the blue crisp and cool. Surrounded by a halo of white diamonds, a blue centre looks brighter still.

How It Works

Choose a setting below and it opens with the blue diamond already selected, so the 3D view and pictures show the ring as it will look. Pick natural or lab grown, then choose your centre stone from our live stock of certified coloured diamonds, each shown with its own photo and grading report. You can switch metal on the ring page at any time.

Made in Our Own Workshop

Every ring is handmade by our family workshop in the Cotswolds, jewellers since 1969, in 100% recycled platinum or 18ct gold, and hallmarked. Not sure which colour or setting suits? Book a virtual meeting or contact us and we will talk you through the stones we have.