×
carat vs. color  length*  width*
  ×

(or examine a )
* size in mm (optional)

4ct Diamond (Marquise, 16.48×8.24mm, White) vs 3ct Diamond (Marquise, 15.32×7.56mm, White)


Quick summary: When looked from above (face-up position), 4ct Diamond (16.48×8.24mm, marquise cut) appears 17% larger than 3ct Diamond (15.32×7.56mm, marquise cut). See below how they compare side-by-side on a ring and finger.

4ct Diamond (marquise cut)
vs
3ct Diamond (marquise cut)
white
 
white
16.48×8.24 mm 15.32×7.56 mm
actual size
Actual size of 4ct Diamond (marquise cut, 16.48×8.24mm, White color)   Actual size of 3ct Diamond (marquise cut, 15.32×7.56mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 4ct Diamond (marquise cut, 16.48×8.24mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 3ct Diamond (marquise cut, 15.32×7.56mm) on a right ring and finger
Your settings
Ring
Gold
Skin tone
Light
Ring diameter
16.9 mm
Ring width
3.0 mm
Finger length
64 mm
Finger coverage
49% vs 45%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 4ct Diamond Marquise (16.48×8.24mm, White) and 3ct Diamond Marquise (15.32×7.56mm, White) as they would appear on a ring and finger. Adjust the ring and finger size to get an idea of how these gemstones would look on your finger.

Where to buy?

For certified gemstones, high-end gemstone jewelry, and birthstone jewelry, see Blue Nile

Face-up Size

The face-up size depends on the shape of the gem, its weight and the proportions of the cut. Face-up area is a measure of the size of the gem when viewed from above (as set in a ring). It tells you how big the gem is at the girdle plane.


4 Ct Diamond (Marquise) 3 Ct Diamond (Marquise)
16.48×8.24 mm vs 15.32×7.56 mm
96.41 mm²   82.23 mm²
Face-up size outline for 4ct Diamond (16.48×8.24mm, marquise cut)
Face-up size outline for 3ct Diamond (15.32×7.56mm, marquise cut)
4ct Diamond Marquise (16.48×8.24mm)
3ct Diamond Marquise (15.32×7.56mm)
Difference: 17% (14.18 mm²)
4ct Diamond (Marquise, 16.48×8.24mm) has approx. 17% more face-up area than 3ct Diamond (Marquise, 15.32×7.56mm).


Popular comparisons: