Loose Lab-Grown Diamonds

Choose from more than 15,000 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.

Read our buying guide below ↓

6.02 Ct Round Lab Diamond • E VS1 Ideal Cut IGI

$7,285.00

6.02 Ct Princess Lab Diamond • G VS1 IGI

$6,483.00

6.02 Ct Princess Lab Diamond • F VS2 IGI

$6,483.00

6.02 Ct Oval Lab Diamond • F VS1 IGI

$5,617.00

6.02 Ct Oval Lab Diamond • E VS2 IGI

$6,166.00

6.02 Ct Oval Lab Diamond • E VS2 IGI

$6,166.00

6.02 Ct Oval Lab Diamond • E SI1 IGI

$5,258.00

6.02 Ct Emerald Lab Diamond • G VS1 IGI

$4,498.00

6.01 Ct Princess Lab Diamond • F VS2 IGI

$6,483.00

6.01 Ct Princess Lab Diamond • F VS1 IGI

$6,673.00

6.01 Ct Princess Lab Diamond • E VS1 IGI

$6,884.00

6.01 Ct Oval Lab Diamond • G VS1 IGI

$4,815.00

6 Ct Round Lab Diamond • F VS2 Excellent Cut IGI

$6,673.00

6 Ct Radiant Lab Diamond • G VS2 IGI

$4,498.00

6 Ct Princess Lab Diamond • F SI1 IGI

$6,082.00

6 Ct Pear Lab Diamond • E VS1 IGI

$6,673.00

6 Ct Oval Lab Diamond • H VS1 IGI

$4,688.00

6 Ct Oval Lab Diamond • E VS2 IGI

$6,145.00

6 Ct Marquise Lab Diamond • E VS1 IGI

$8,848.00

5.9 Ct Portrait Lab Diamond • G VVS2 IGI

$11,804.00

5.82 Ct Emerald Lab Diamond • G VS2 GIA

$10,875.00

5.81 Ct Emerald Lab Diamond • G VVS2 IGI

$4,667.00

5.8 Ct Emerald Lab Diamond • G VS2 IGI

$4,160.00

5.76 Ct Emerald Lab Diamond • G VS1 GIA

$10,769.00

5.74 Ct Princess Lab Diamond • E VS1 IGI

$5,427.00

5.7 Ct Princess Lab Diamond • E VVS2 IGI

$5,765.00

5.66 Ct Round Lab Diamond • G VS1 Ideal Cut IGI

$5,744.00

5.63 Ct Princess Lab Diamond • E VS1 IGI

$5,343.00

5.6 Ct Emerald Lab Diamond • H SI1 IGI

$4,012.00

5.58 Ct Round Lab Diamond • E VS1 Ideal Cut IGI

$7,116.00

5.57 Ct Emerald Lab Diamond • H VS1 IGI

$3,991.00

5.56 Ct Princess Lab Diamond • E VS1 IGI

$5,279.00

5.52 Ct Emerald Lab Diamond • G VS1 IGI

$3,970.00

5.5 Ct Round Lab Diamond • G VS1 Ideal Cut IGI

$5,575.00

5.48 Ct Rd-old cut Lab Diamond • F VS2 NC

$10,981.00

5.45 Ct Emerald Lab Diamond • G VS1 IGI

$3,907.00

5.44 Ct Heart Lab Diamond • G VS1 IGI

$6,589.00

5.43 Ct Round Lab Diamond • G VS2 Ideal Cut IGI

$5,512.00

5.41 Ct Sq.emerald Lab Diamond • E VS1 IGI

$4,773.00

5.4 Ct Cushion Lab Diamond • F VS1 IGI

$4,583.00

5.39 Ct Emerald Lab Diamond • E VS2 IGI

$4,414.00

5.38 Ct Princess Lab Diamond • D VS2 IGI

$7,222.00

5.38 Ct Oval Lab Diamond • F VS1 IGI

$4,920.00

5.36 Ct Emerald Lab Diamond • E VS2 IGI

$4,371.00

5.35 Ct Princess Lab Diamond • F VS1 IGI

$4,899.00

5.34 Ct Sq.emerald Lab Diamond • E VS1 IGI

$4,709.00

5.28 Ct Oval Lab Diamond • G VS2 IGI

$4,308.00

5.27 Ct Rd-rose Lab Diamond • E VS1 IGI

$12,818.00

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.

Loose Lab-Grown Diamonds

How to choose a loose lab-grown diamond

Are lab-grown diamonds real diamonds?

Let customers speak for us