×
carat vs. color  length*  width*
  ×

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

4ct Diamond (Princess, 8.75×8.75mm, White) vs 3ct Diamond (Emerald, 9.64×7.14mm, White)


Quick summary: When looked from above (face-up position), 4ct Diamond (8.75×8.75mm, princess cut) appears 20% larger than 3ct Diamond (9.64×7.14mm, emerald cut). See below how they compare side-by-side on a ring and finger.

4ct Diamond (princess cut)
vs
 3ct Diamond (emerald cut)
white
 
white
8.75×8.75 mm 9.64×7.14 mm
actual size
Actual size of 4ct Diamond (princess cut, 8.75×8.75mm, White color)   Actual size of 3ct Diamond (emerald cut, 9.64×7.14mm, 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 (princess cut, 8.75×8.75mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 3ct Diamond (emerald cut, 9.64×7.14mm) 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
 52% vs 43%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 4ct Diamond Princess (8.75×8.75mm, White) and 3ct Diamond Emerald (9.64×7.14mm, 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 (Princess) 3 Ct Diamond (Emerald)
8.75×8.75 mm vs 9.64×7.14 mm
76.56 mm²   64.01 mm²
Face-up size outline for 4ct Diamond (8.75×8.75mm, princess cut)
Face-up size outline for 3ct Diamond (9.64×7.14mm, emerald cut)
4ct Diamond Princess (8.75×8.75mm)
3ct Diamond Emerald (9.64×7.14mm)
Difference: 20% (12.55 mm²)
4ct Diamond (Princess, 8.75×8.75mm) has approx. 20% more face-up area than 3ct Diamond (Emerald, 9.64×7.14mm).


Popular comparisons: