Collection: 5 Carat & Up Lab Diamond Engagement Rings

A 5 carat lab grown diamond engagement ring offers extraordinary center-stone presence for those seeking an oversized diamond rather than traditional engagement ring proportions. This collection includes lab grown diamonds starting at 5.00 carats and larger, with a range of shapes, dimensions and proportions.

Lab grown diamonds have the same fundamental chemical, physical and optical properties as mined diamonds while making exceptionally large center stones accessible at a significantly lower price than comparable mined diamonds. Gema&Co lab grown diamonds 1.00 carat and larger are IGI graded.

Explore all lab grown diamond engagement rings to compare additional carat weights and designs.

With diamonds of this size, carat weight alone doesn't tell you how large a stone will appear. Face-up dimensions, cut quality and length-to-width ratio can have a significant effect on its appearance.

Round and cushion diamonds create a broad, symmetrical footprint, while elongated shapes such as oval, radiant, emerald, pear and marquise can provide greater coverage across the finger.

Brilliant cuts such as round, oval and radiant emphasize sparkle, while emerald cuts feature larger step facets and a more geometric appearance. At 5 carats and above, these differences become especially noticeable, making both shape and proportions important considerations when selecting a diamond.

An oversized center diamond requires a setting designed around its individual dimensions and proportions.

Solitaire settings keep the focus on the center diamond, while pavé engagement rings add brilliance along the band. Hidden halos introduce additional diamond detail beneath the center stone without substantially increasing its face-up footprint.

Setting height, prong placement and band proportions become particularly important with larger diamonds. A lower profile can keep the center stone closer to the finger, while a higher setting may provide additional clearance for pairing with certain wedding bands.

For a specific diamond size, proportion or setting design, Gema&Co can create a custom lab grown diamond engagement ring.

Yes. A 5 carat diamond is considered an exceptionally large center stone and provides substantial finger coverage. Diamonds above 5 carats create an even more dramatic appearance, with perceived size depending on their shape, dimensions and proportions.

Yes. Lab grown diamonds are real diamonds with the same fundamental chemical composition, crystal structure and physical properties as mined diamonds. The primary difference is their origin.

Yes. Gema&Co lab grown diamonds 1.00 carat and larger are IGI graded, including diamonds in the 5 carat and larger collection.

Look beyond carat weight and compare cut quality, face-up dimensions, length-to-width ratio, color and clarity. With diamonds of this size, differences in shape and proportions can significantly affect how large and balanced the stone appears on the finger.