3 Carat Lab Grown Diamond

A 3 carat lab grown diamond is one of the most searched specifications in fine jewellery — and at Satéur, it arrives as a genuine IGI-certified lab-grown diamond, chemically and physically identical to a mined diamond of equivalent grade. Colour graded D–E, cut to Excellent standard, with a round brilliant diameter of approximately 9.4 mm, a 3 carat stone is unmistakably present on the hand. Every ring ships free worldwide in the signature Satéur box with a lifetime guarantee, set in solid 18k gold.

A 3 carat stone is widely considered a meaningful milestone in fine diamond jewellery — large enough to read as a statement engagement ring, architecturally significant in every setting style. The Satéur lab-grown diamond range at this weight includes the Satéur Tout Autour 1874 Diamond Ring™, 18K White Gold, Round Cut — a pavé-set halo with the 3-carat centre stone elevated above a band of brilliant-cut lab grown diamonds — and the Satéur Homme Silver L' Orbite Diamond Ring™, 18K White Gold, Round Cut, which brings the 3-carat specification into architectural men's fine jewellery. Alongside these lab grown diamond centrepieces, complementary rings in the collection — the Satéur Triomphe Ring™, the Satéur Royale Ring™, and the Satéur Rosée Impériale Ring™ — provide broader context for how a 3-carat diamond presence translates across setting styles.

The four Cs determine a lab grown diamond's value and appearance: colour (D–E near-colourless at Satéur), cut (Excellent, for maximum light return and proportions), clarity (VS1 and above, no inclusions visible to the naked eye), and carat weight (3.00 ct, the measured physical mass of the stone). Lab-grown diamonds are graded on identical criteria to mined diamonds; the IGI certificate accompanying each Satéur stone verifies all four dimensions independently. Oval and radiant cuts are also available across the wider lab diamond collection for those who prefer a longer visual footprint at the same carat weight.

Lab-grown diamonds typically cost 40–50% less than mined diamonds of the same cut, colour, and carat. At 3 carats, this differential is significant — a mined diamond at this specification commands prices in the tens of thousands. The grown diamond in a Satéur setting is the same material, grown above ground, without the cost of extraction. White gold is the primary setting metal for the 3-carat lab diamond tier, presenting the D–E near-colourless stone at its most accurate. Solid 18k gold construction throughout ensures the setting is appropriate to a certified diamond of this grade.

For deeper reading: 3 Carat Lab-Grown Diamond Ring explores the full ring collection at this specification. 2 Carat Lab-Grown Diamond Ring Price provides a comparative value reference. Lab-Grown vs Natural Diamond covers the full material comparison. Browse the complete ring catalogue at Shop All Rings and compare all stone tiers at Moissanite vs Diamond vs Satéur Gems®.