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3 Carat Lab Grown Diamonds

3 carat lab grown diamonds are ideal for those seeking a striking, eye-catching look.

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A curated assortment of our most innovative diamonds

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3 carat lab grown diamonds are available in round, oval, emerald, cushion, elongated cushion, pear, radiant, princess, marquise, asscher, and heart shapes. Each shape offers different face-up proportions and optical character to suit a range of ring styles.
Cut grades for 3 carat lab grown diamonds range from Super Ideal and Ideal to Very Good and Good, depending on the shape and grading lab. Cut grade indicates the diamond’s faceting proportions and how well it returns light.
3 carat lab grown diamonds can be filtered by shape, cut grade, color, clarity, carat range, price, length-to-width ratio, fluorescence, polish, symmetry, and report lab. Filtered results help narrow options while keeping the selection focused on the 3 carat category.
Color grades for 3 carat lab grown diamonds typically range from D to J and clarity grades range from Flawless and Internally Flawless through VVS, VS, and SI. Available grades vary by shape and individual listings across the 3 carat collection.
Yes, most 3 carat lab grown diamonds include a grading report from recognized labs such as GIA, IGI, GCAL, or HRD that lists carat weight, cut grade, color, clarity, measurements, and a report number. Report details are shown on each diamond’s product page.
Two diamonds with identical grades can differ because of proportions, facet arrangement, length-to-width ratio, fluorescence, and minor variations in measurements and polish. Those factors affect how a diamond reflects light and its overall face-up appearance.
Yes, many 3 carat lab grown diamonds include 360-degree images, magnified photos, and sometimes videos or Real View tools to evaluate proportions and light performance from multiple angles. A Brilliant Earth jewelry specialist can provide additional imagery or guidance if needed.
Engagement ring settings that accommodate a 3 carat lab grown diamond include solitaire, halo, three stone, bezel, and vintage-inspired styles, with design choices guided by the diamond’s shape and proportions. Speak with a Brilliant Earth jewelry specialist to review settings that match a specific diamond’s measurements.
Length-to-width ratios around 1.00 to 1.20 tend to produce a balanced or slightly square look for cushions, princess, and radiant shapes, while ratios above 1.30 create a more elongated appearance for shapes like oval, pear, and marquise. Preferences for proportion influence the diamond’s silhouette and how it pairs with a ring setting.
Yes, a chosen 3 carat lab grown diamond can be added to an engagement ring setting, and a Brilliant Earth jewelry specialist can help match the diamond to compatible settings and confirm proportions.

Half Carat (0.5 ct.) Lab Grown Diamonds

4 Carat Lab Grown Diamonds

1 Carat Lab Grown Diamonds

2 Carat Lab Grown Diamonds

5 Carat Lab Grown Diamonds

Lab Grown Diamonds

Marquise Cut Lab Grown Diamonds

Oval Cut Lab Grown Diamonds

Flawless Lab Grown Diamonds

Blue Lab Grown Diamonds