Lab Grown Princess Cut Diamonds

More Stone, Less Waste

Growing a diamond in a lab doesn’t just change where it comes from. It changes how efficiently it can be shaped into a princess cut. Rough crystals produced via HPHT or CVD tend to form in cubic or octahedral geometries, which line up naturally with a square outline. That means a lab grown rough stone can often be planned into a princess cut with less material cut away than a round shape would require. One of the reasons lab grown princess cut diamonds tend to offer strong size and value for the price.

A Clarity Detail Worth Knowing

Lab grown stones can also carry a distinct clarity characteristic called graining — faint internal growth lines left over from the layer-by-layer growing process. On most shapes this is barely relevant, but on a princess cut it’s worth knowing about, because a sharp corner can make graining lines near the surface more visible than they’d be on a rounder shape. It’s one more reason we grade clarity carefully on every lab grown princess cut stone we list, and typically recommend VS2 or above so nothing is visible to the naked eye once it’s set.

Protecting the Corners

A princess cut’s four 90-degree points are more exposed than a rounded girdle, so a V-tip prong or bezel setting is the safer choice for everyday wear — true of any princess cut, but especially worth flagging here since so many of our lab grown buyers are choosing this shape specifically for its size-to-price advantage, and want the peace of mind that it will hold up long-term.

We built our lab grown collection around a simple idea: you shouldn’t have to choose between a stone you love and a price that makes sense.

Every princess cut lab diamond has been individually selected by our team, not bulk-listed from a supplier feed. We look closely at cut quality first, because a princess cut lives or dies on its light performance. A poorly cut stone can look glassy or develop a dark “bowtie” effect across the centre, no matter how impressive its certificate reads on paper. Our specialists physically review each stone’s proportions before it’s added to the site, so what you see reflects how the diamond will actually perform on your finger.

Because lab grown diamonds are more cost-efficient to produce, we’re able to pass that saving directly on to you rather than positioning lab grown as a premium “eco” upcharge, which some retailers do. Our pricing reflects the genuine cost advantage of the growing process — nothing more.

Every purchase includes an independent GIA or IGI certificate, a detailed grading report, and the option to book a free one-on-one consultation with our team if you’d like to see the stone talked through in real time before committing. If you’re setting the diamond into an engagement ring, our in-house designers can also guide you through metal, setting style and band pairing, so the finished piece is built around the stone — not the other way round.

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Shop Lab Grown Princess Cut Diamonds by Carat

Not sure which size fits your budget? Here’s where the savings from choosing lab grown really show up — browse by carat and see how much further your budget stretches compared to an earth-mined stone of the same size.

1ct Lab Grown Princess Cut Diamonds | 1.5ct Lab Grown Princess Cut Diamonds | 2ct Lab Grown Princess Cut Diamonds | 3ct Lab Grown Princess Cut Diamonds | 5ct Lab Grown Princess Cut Diamonds

Our Best Recommendation: Lab grown princess cut diamonds cost significantly less per carat than earth-mined stones, which is why we typically recommend a 1.5ct, Excellent Cut, D-E Colour, VVS Clarity diamond — a pure white, fully eye-clean stone that would carry a considerable premium in an earth-mined equivalent, but sits comfortably within budget here. It’s the sweet spot our lab grown buyers choose most often.