From the Maison

3 Carat Princess Lab Grown Diamond Ring

A bold three-carat princess cut — a real, IGI-certified lab-grown diamond in solid 18K gold, at a fraction of the mined price.

6 PiecesFrom $1,098Free Worldwide Delivery

The 3 Carat Princess Edit

A 3 carat princess lab grown diamond ring is an engagement ring set with a square princess-cut lab-grown diamond weighing three carats, a bold, modern alternative to the round solitaire.

The Satéur Aurous Gold Destinée Diamond Ring™ leads this three-carat edit on one promise: a real, IGI-certified lab-grown diamond for a fraction of the mined price, scaled up to a statement weight. Every ring arrives with complimentary delivery, a lifetime guarantee, and the Satéur box. At three carats, a mined princess cut runs into five figures; here the same presence sits at an accessible price point.

Each ring is set in solid 18K gold, never plated, and every diamond carries an independent IGI grading report. The certificate documents the full three-carat weight alongside its colour, cut, and clarity, so a large stone never means an uncertain one. The size is real and the paperwork proves it.

These are real diamonds, the same hardness and brilliance as mined stones, rating 10 on the Mohs scale. We select D–E colour, Excellent cut, and VS clarity, which matters most on a princess cut: a clean, sharp-cornered square at three carats shows its quality plainly. Cut precision is what gives the princess shape its crisp, contemporary sparkle.

The edit centres on the square princess silhouette at three carats, with solitaire and detailed settings shown across white gold and yellow gold, plus companion carat weights for those calibrating presence against budget. Whether you want a clean princess solitaire or a setting with shoulder detail, the price stays a fraction of the mined equivalent. The grid below shows every piece.

Explore related lab-grown diamond styles: Emerald Lab Grown Diamond Ring, Pear Lab Grown Diamond Ring, 1 Carat Oval Lab Grown Diamond Ring. For the full range, browse the Lab Grown Diamonds collection, and to compare a certified lab diamond against a mined stone read Lab Grown vs Natural Diamond.

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Questions

3 Carat Princess Lab Grown Diamond Ring, answered.

What is a 3 carat princess lab grown diamond ring?+

It is an engagement ring set with a square princess-cut lab-grown diamond weighing three carats. The diamond is a real, IGI-certified stone identical to a mined diamond, offered at a fraction of the mined price for a striking, modern look.

What are the actual dimensions of a 3 carat princess cut lab diamond?+

A 3 carat princess cut typically measures around 8 to 8.2 millimetres on each side, giving it a large, square footprint on the hand. The princess shape carries its weight efficiently, so it reads as a substantial, statement-sized stone.

How does a princess cut compare to round or cushion cuts at this carat weight?+

A princess cut shows crisp, sharp corners and a clean square outline, reading as more contemporary than a round and more defined than a cushion. At three carats the square shape covers more visible surface per carat, making the stone look generous on the finger.

What colour and clarity grades suit a 3 carat princess engagement ring?+

We select D–E colour, Excellent cut, and VS clarity. At three carats those grades keep a princess cut bright, white, and clean to the eye, since a larger stone shows its colour and clarity more openly than a smaller one.

Do you offer custom settings for lab diamond solitaires?+

The collection includes solitaire and detailed settings across white gold and yellow gold in solid 18K gold, so you can match the three-carat princess stone to the style you prefer. The grid shows the available settings for this edit.

How do I care for and clean a princess cut lab diamond ring?+

Clean it with warm water, mild soap, and a soft brush, paying attention to the four corners where a princess cut can collect residue. Because a lab-grown diamond rates 10 on the Mohs scale, it resists scratching and holds its brilliance with simple regular care.

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3 Carat Princess Lab Grown Diamond Ring

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3 Carat Princess Lab Grown Diamond Ring, answered.

Worn by 100,000 across 150 countries.