3 Carat Diamonds
Compare how 3 carat diamonds look across all shapes
3 Carat Size Guide
A 3 carat diamond varies in appearance depending on the shape. Here are the actual dimensions (width × height) for each cut. Browse 3 carat diamonds to see pricing and availability.
Round
9.4mm × 9.4mm
Princess
8mm × 8mm
Cushion
8mm × 8mm
Emerald
9.65mm × 7.1mm
Asscher
8mm × 8mm
Oval
11.2mm × 8.3mm
Pear
12.3mm × 8.1mm
Marquise
15mm × 7.5mm
Radiant
8.8mm × 7mm
Heart
9.4mm × 9.4mm
Note: Dimensions are based on well-cut diamonds with standard proportions. Actual sizes may vary slightly based on cut quality and proportions.
Compare Shapes at 3 Carats
See how different diamond shapes compare when they're all 3 carats:
Round vs Princessat 3 caratsRound vs Cushionat 3 caratsRound vs Emeraldat 3 caratsRound vs Asscherat 3 caratsRound vs Ovalat 3 caratsRound vs Pearat 3 caratsRound vs Marquiseat 3 caratsRound vs Radiantat 3 caratsRound vs Heartat 3 caratsPrincess vs Cushionat 3 caratsPrincess vs Emeraldat 3 caratsPrincess vs Asscherat 3 caratsPrincess vs Ovalat 3 caratsPrincess vs Pearat 3 caratsPrincess vs Marquiseat 3 caratsPrincess vs Radiantat 3 caratsPrincess vs Heartat 3 caratsCushion vs Emeraldat 3 caratsCushion vs Asscherat 3 caratsCushion vs Ovalat 3 caratsCushion vs Pearat 3 caratsCushion vs Marquiseat 3 caratsCushion vs Radiantat 3 caratsCushion vs Heartat 3 carats
Size Up or Down
Compare 3 carat diamonds to nearby carat weights:
2.75ct vs 3ct Round2.75ct vs 3ct Princess2.75ct vs 3ct Cushion2.75ct vs 3ct Emerald2.75ct vs 3ct Asscher2.75ct vs 3ct Oval2.75ct vs 3ct Pear2.75ct vs 3ct Marquise2.75ct vs 3ct Radiant2.75ct vs 3ct Heart3ct vs 3.25ct Round3ct vs 3.25ct Princess3ct vs 3.25ct Cushion3ct vs 3.25ct Emerald3ct vs 3.25ct Asscher3ct vs 3.25ct Oval3ct vs 3.25ct Pear3ct vs 3.25ct Marquise