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Loose Lab-Grown Diamonds

Choose from thousands of loose lab-grown diamonds, created with 100% solar energy. Every shape, from round brilliant and oval to pear, emerald, cushion, radiant, marquise, princess and heart, in colourless D to J grades and rare fancy colours, from under half a carat to over 5 carats, priced from £220. Use the filters to narrow down by shape, carat, colour, clarity and price.

Shop by carat: under 1 carat, 1 carat, 1.5 carat, 2 carat or 3 carat and above.

Read our buying guide below ↓

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2340 products

1.5ct Cushion lab-grown diamond, Fancy Vivid Green, VS11.5ct Cushion lab-grown diamond, Fancy Vivid Green, VS1 – 360° view
1.5 Carat Cushion Lab Diamond, Fancy Vivid Green, VS1, IGI Sale price£1,940.00
1.48ct Cushion lab-grown diamond, Fancy Vivid Blue, VS11.48ct Cushion lab-grown diamond, Fancy Vivid Blue, VS1 – 360° view
1.48 Carat Cushion Lab Diamond, Fancy Vivid Blue, VS1, IGI Sale price£1,820.00
1.48ct Elongated Cushion lab-grown diamond, E VS11.48ct Elongated Cushion lab-grown diamond, E VS1 – 360° view
1.48 Carat Elongated Cushion Lab Diamond, E VS1, IGI Sale price£560.00
1.46ct Cushion lab-grown diamond, Fancy Vivid Blue, VS11.46ct Cushion lab-grown diamond, Fancy Vivid Blue, VS1 – 360° view
1.46 Carat Cushion Lab Diamond, Fancy Vivid Blue, VS1, IGI Sale price£1,800.00
1.46ct Cushion lab-grown diamond, E VVS21.46ct Cushion lab-grown diamond, E VVS2 – 360° view
1.46 Carat Cushion Lab Diamond, E VVS2, IGI Sale price£570.00
1.45ct Elongated Cushion lab-grown diamond, E VS11.45ct Elongated Cushion lab-grown diamond, E VS1 – 360° view
1.45 Carat Elongated Cushion Lab Diamond, E VS1, IGI Sale price£550.00
1.45ct Cushion lab-grown diamond, E VS11.45ct Cushion lab-grown diamond, E VS1 – 360° view
1.45 Carat Cushion Lab Diamond, E VS1, IGI Sale price£550.00
1.45ct Elongated Cushion lab-grown diamond, E VS11.45ct Elongated Cushion lab-grown diamond, E VS1 – 360° view
1.45 Carat Elongated Cushion Lab Diamond, E VS1, IGI Sale price£550.00
1.44ct Elongated Cushion lab-grown diamond, D VS11.44ct Elongated Cushion lab-grown diamond, D VS1 – 360° view
1.44 Carat Elongated Cushion Lab Diamond, D VS1, IGI Sale price£590.00
1.43ct Elongated Cushion lab-grown diamond, Fancy Vivid Blue, VS11.43ct Elongated Cushion lab-grown diamond, Fancy Vivid Blue, VS1 – 360° view
1.43 Carat Elongated Cushion Lab Diamond, Fancy Vivid Blue, VS1, IGI Sale price£1,760.00
1.43ct Elongated Cushion lab-grown diamond, D VS11.43ct Elongated Cushion lab-grown diamond, D VS1 – 360° view
1.43 Carat Elongated Cushion Lab Diamond, D VS1, IGI Sale price£590.00
1.42ct Elongated Cushion lab-grown diamond, Fancy Vivid Blue, VS11.42ct Elongated Cushion lab-grown diamond, Fancy Vivid Blue, VS1 – 360° view
1.42 Carat Elongated Cushion Lab Diamond, Fancy Vivid Blue, VS1, IGI Sale price£1,750.00
1.41ct Elongated Cushion lab-grown diamond, D VS11.41ct Elongated Cushion lab-grown diamond, D VS1 – 360° view
1.41 Carat Elongated Cushion Lab Diamond, D VS1, IGI Sale price£580.00
1.25ct Elongated Cushion lab-grown diamond, D VS21.25ct Elongated Cushion lab-grown diamond, D VS2 – 360° view
1.25 Carat Elongated Cushion Lab Diamond, D VS2, IGI Sale price£520.00
1.2ct Elongated Cushion lab-grown diamond, Fancy Vivid Blue, VS11.2ct Elongated Cushion lab-grown diamond, Fancy Vivid Blue, VS1 – 360° view
1.2 Carat Elongated Cushion Lab Diamond, Fancy Vivid Blue, VS1, IGI Sale price£1,490.00
1.16ct Elongated Cushion lab-grown diamond, Fancy Vivid Blue, VS11.16ct Elongated Cushion lab-grown diamond, Fancy Vivid Blue, VS1 – 360° view
1.16 Carat Elongated Cushion Lab Diamond, Fancy Vivid Blue, VS1, IGI Sale price£1,450.00
1.13ct Elongated Cushion lab-grown diamond, Fancy Vivid Blue, VS11.13ct Elongated Cushion lab-grown diamond, Fancy Vivid Blue, VS1 – 360° view
1.13 Carat Elongated Cushion Lab Diamond, Fancy Vivid Blue, VS1, IGI Sale price£1,410.00
1.13ct Cushion lab-grown diamond, Fancy Vivid Blue, VVS21.13ct Cushion lab-grown diamond, Fancy Vivid Blue, VVS2 – 360° view
1.13 Carat Cushion Lab Diamond, Fancy Vivid Blue, VVS2, IGI Sale price£1,410.00
1.11ct Elongated Cushion lab-grown diamond, Fancy Vivid Blue, VS11.11ct Elongated Cushion lab-grown diamond, Fancy Vivid Blue, VS1 – 360° view
1.11 Carat Elongated Cushion Lab Diamond, Fancy Vivid Blue, VS1, IGI Sale price£1,390.00
1.1ct Elongated Cushion lab-grown diamond, Fancy Vivid Blue, VS11.1ct Elongated Cushion lab-grown diamond, Fancy Vivid Blue, VS1 – 360° view
1.1 Carat Elongated Cushion Lab Diamond, Fancy Vivid Blue, VS1, IGI Sale price£1,380.00
1.1ct Cushion lab-grown diamond, Fancy Vivid Blue, VS11.1ct Cushion lab-grown diamond, Fancy Vivid Blue, VS1 – 360° view
1.1 Carat Cushion Lab Diamond, Fancy Vivid Blue, VS1, IGI Sale price£1,380.00
1.1ct Cushion lab-grown diamond, Fancy Vivid Blue, VS11.1ct Cushion lab-grown diamond, Fancy Vivid Blue, VS1 – 360° view
1.1 Carat Cushion Lab Diamond, Fancy Vivid Blue, VS1, IGI Sale price£1,380.00
1.1ct Elongated Cushion lab-grown diamond, Fancy Vivid Blue, VVS21.1ct Elongated Cushion lab-grown diamond, Fancy Vivid Blue, VVS2 – 360° view
1.1 Carat Elongated Cushion Lab Diamond, Fancy Vivid Blue, VVS2, IGI Sale price£1,380.00
1.1ct Elongated Cushion lab-grown diamond, Fancy Vivid Blue, VVS21.1ct Elongated Cushion lab-grown diamond, Fancy Vivid Blue, VVS2 – 360° view
1.1 Carat Elongated Cushion Lab Diamond, Fancy Vivid Blue, VVS2, IGI Sale price£1,380.00
1.1ct Cushion lab-grown diamond, Fancy Vivid Blue, VVS21.1ct Cushion lab-grown diamond, Fancy Vivid Blue, VVS2 – 360° view
1.1 Carat Cushion Lab Diamond, Fancy Vivid Blue, VVS2, IGI Sale price£1,380.00
1.1ct Elongated Cushion lab-grown diamond, D VS21.1ct Elongated Cushion lab-grown diamond, D VS2 – 360° view
1.1 Carat Elongated Cushion Lab Diamond, D VS2, IGI Sale price£460.00
1.09ct Elongated Cushion lab-grown diamond, Fancy Vivid Pink, VS11.09ct Elongated Cushion lab-grown diamond, Fancy Vivid Pink, VS1 – 360° view
1.09 Carat Elongated Cushion Lab Diamond, Fancy Vivid Pink, VS1, IGI Sale price£1,460.00
1.09ct Cushion lab-grown diamond, Fancy Vivid Blue, VS11.09ct Cushion lab-grown diamond, Fancy Vivid Blue, VS1 – 360° view
1.09 Carat Cushion Lab Diamond, Fancy Vivid Blue, VS1, IGI Sale price£1,370.00
1.09ct Elongated Cushion lab-grown diamond, Fancy Vivid Blue, VS11.09ct Elongated Cushion lab-grown diamond, Fancy Vivid Blue, VS1 – 360° view
1.09 Carat Elongated Cushion Lab Diamond, Fancy Vivid Blue, VS1, IGI Sale price£1,370.00
1.09ct Elongated Cushion lab-grown diamond, Fancy Vivid Blue, VS11.09ct Elongated Cushion lab-grown diamond, Fancy Vivid Blue, VS1 – 360° view
1.09 Carat Elongated Cushion Lab Diamond, Fancy Vivid Blue, VS1, IGI Sale price£1,370.00
1.09ct Cushion lab-grown diamond, Fancy Vivid Blue, VS11.09ct Cushion lab-grown diamond, Fancy Vivid Blue, VS1 – 360° view
1.09 Carat Cushion Lab Diamond, Fancy Vivid Blue, VS1, IGI Sale price£1,370.00
1.09ct Elongated Cushion lab-grown diamond, D VS21.09ct Elongated Cushion lab-grown diamond, D VS2 – 360° view
1.09 Carat Elongated Cushion Lab Diamond, D VS2, IGI Sale price£460.00
1.08ct Elongated Cushion lab-grown diamond, Fancy Vivid Blue, VS21.08ct Elongated Cushion lab-grown diamond, Fancy Vivid Blue, VS2 – 360° view
1.08 Carat Elongated Cushion Lab Diamond, Fancy Vivid Blue, VS2, IGI Sale price£1,350.00
1.08ct Elongated Cushion lab-grown diamond, Fancy Vivid Blue, VS11.08ct Elongated Cushion lab-grown diamond, Fancy Vivid Blue, VS1 – 360° view
1.08 Carat Elongated Cushion Lab Diamond, Fancy Vivid Blue, VS1, IGI Sale price£1,350.00
1.08ct Cushion lab-grown diamond, Fancy Vivid Blue, VS11.08ct Cushion lab-grown diamond, Fancy Vivid Blue, VS1 – 360° view
1.08 Carat Cushion Lab Diamond, Fancy Vivid Blue, VS1, IGI Sale price£1,350.00
1.08ct Cushion lab-grown diamond, Fancy Vivid Blue, VS11.08ct Cushion lab-grown diamond, Fancy Vivid Blue, VS1 – 360° view
1.08 Carat Cushion Lab Diamond, Fancy Vivid Blue, VS1, IGI Sale price£1,350.00
1.08ct Cushion lab-grown diamond, Fancy Vivid Blue, VS11.08ct Cushion lab-grown diamond, Fancy Vivid Blue, VS1 – 360° view
1.08 Carat Cushion Lab Diamond, Fancy Vivid Blue, VS1, IGI Sale price£1,350.00
1.08ct Cushion lab-grown diamond, Fancy Vivid Blue, VS11.08ct Cushion lab-grown diamond, Fancy Vivid Blue, VS1 – 360° view
1.08 Carat Cushion Lab Diamond, Fancy Vivid Blue, VS1, IGI Sale price£1,350.00
1.08ct Cushion lab-grown diamond, Fancy Vivid Blue, VVS21.08ct Cushion lab-grown diamond, Fancy Vivid Blue, VVS2 – 360° view
1.08 Carat Cushion Lab Diamond, Fancy Vivid Blue, VVS2, IGI Sale price£1,350.00
1.07ct Cushion lab-grown diamond, Fancy Vivid Blue, VS21.07ct Cushion lab-grown diamond, Fancy Vivid Blue, VS2 – 360° view
1.07 Carat Cushion Lab Diamond, Fancy Vivid Blue, VS2, IGI Sale price£1,340.00
1.07ct Cushion lab-grown diamond, Fancy Vivid Blue, VS21.07ct Cushion lab-grown diamond, Fancy Vivid Blue, VS2 – 360° view
1.07 Carat Cushion Lab Diamond, Fancy Vivid Blue, VS2, IGI Sale price£1,340.00
1.07ct Cushion lab-grown diamond, Fancy Vivid Blue, VS11.07ct Cushion lab-grown diamond, Fancy Vivid Blue, VS1 – 360° view
1.07 Carat Cushion Lab Diamond, Fancy Vivid Blue, VS1, IGI Sale price£1,340.00
1.07ct Cushion lab-grown diamond, Fancy Vivid Blue, VVS21.07ct Cushion lab-grown diamond, Fancy Vivid Blue, VVS2 – 360° view
1.07 Carat Cushion Lab Diamond, Fancy Vivid Blue, VVS2, IGI Sale price£1,340.00
1.06ct Cushion lab-grown diamond, Fancy Vivid Blue, VS11.06ct Cushion lab-grown diamond, Fancy Vivid Blue, VS1 – 360° view
1.06 Carat Cushion Lab Diamond, Fancy Vivid Blue, VS1, IGI Sale price£1,330.00
1.06ct Cushion lab-grown diamond, Fancy Vivid Blue, VS11.06ct Cushion lab-grown diamond, Fancy Vivid Blue, VS1 – 360° view
1.06 Carat Cushion Lab Diamond, Fancy Vivid Blue, VS1, IGI Sale price£1,330.00
1.06ct Elongated Cushion lab-grown diamond, Fancy Vivid Blue, VS11.06ct Elongated Cushion lab-grown diamond, Fancy Vivid Blue, VS1 – 360° view
1.06 Carat Elongated Cushion Lab Diamond, Fancy Vivid Blue, VS1, IGI Sale price£1,330.00
1.06ct Cushion lab-grown diamond, Fancy Vivid Blue, VVS21.06ct Cushion lab-grown diamond, Fancy Vivid Blue, VVS2 – 360° view
1.06 Carat Cushion Lab Diamond, Fancy Vivid Blue, VVS2, IGI Sale price£1,330.00
1.06ct Elongated Cushion lab-grown diamond, Fancy Vivid Blue, VVS21.06ct Elongated Cushion lab-grown diamond, Fancy Vivid Blue, VVS2 – 360° view
1.06 Carat Elongated Cushion Lab Diamond, Fancy Vivid Blue, VVS2, IGI Sale price£1,330.00

How to choose a loose lab-grown diamond

Colour. D, E and F are colourless, the whitest grades; G to J are near-colourless and look white once set, offering excellent value. Read more in our guides to D colour and F colour lab diamonds. For something different, explore our pink, blue, yellow, champagne and green lab-grown diamonds.

Clarity. Most of our diamonds are VS1 or VS2, which are eye-clean, with a selection of VVS1 and VVS2 stones for those who want near-flawless clarity. See our F VS2 guide and VVS1 guide.

Cut and shape. Round brilliants offer the most sparkle; oval, pear and marquise shapes look larger for their carat weight; emerald cuts have an elegant step-cut look; cushion, radiant and princess cuts combine brilliance with a squarer outline.

Certification. The vast majority of our loose diamonds come with an independent IGI or GIA grading report confirming carat, colour, clarity and measurements; look for IGI or GIA in the product title. Learn more in lab-grown diamond certifications explained.

Are lab-grown diamonds real diamonds?

Yes. Lab-grown diamonds are chemically, physically and optically identical to mined diamonds. They are grown in a laboratory rather than mined, which makes them more affordable and more sustainable.

Frequently asked questions

Can I see these diamonds in your London store?

Our London store displays finished jewellery and a smaller selection of gemstones. Our loose diamonds are held at our workshop, so they are not on display in store.