×
carat vs. color  length*  width*
  ×

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

3ct Ruby (Marquise, 14.24×7.12mm, Red) vs 4ct Ruby (Emerald, 10.14×7.51mm, Red)


Quick summary: When looked from above (face-up position), 3ct Ruby (14.24×7.12mm, marquise cut) appears 2% larger than 4ct Ruby (10.14×7.51mm, emerald cut). See below how they compare side-by-side on a ring and finger.

3ct Ruby (marquise cut)
vs
 4ct Ruby (emerald cut)
red
 
red
14.24×7.12 mm 10.14×7.51 mm
actual size
Actual size of 3ct Ruby (marquise cut, 14.24×7.12mm, Red color)   Actual size of 4ct Ruby (emerald cut, 10.14×7.51mm, Red color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Red 3ct Ruby (marquise cut, 14.24×7.12mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Red 4ct Ruby (emerald cut, 10.14×7.51mm) 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
 43% vs 45%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 3ct Ruby Marquise (14.24×7.12mm, Red) and 4ct Ruby Emerald (10.14×7.51mm, Red) 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.


3 Ct Ruby (Marquise) 4 Ct Ruby (Emerald)
14.24×7.12 mm vs 10.14×7.51 mm
71.99 mm²   70.82 mm²
Face-up size outline for 3ct Ruby (14.24×7.12mm, marquise cut)
Face-up size outline for 4ct Ruby (10.14×7.51mm, emerald cut)
3ct Ruby Marquise (14.24×7.12mm)
4ct Ruby Emerald (10.14×7.51mm)
Difference: 2% (1.17 mm²)
3ct Ruby (Marquise, 14.24×7.12mm) has approx. 2% more face-up area than 4ct Ruby (Emerald, 10.14×7.51mm).


Popular comparisons: