×
carat vs. color  length*  width*
  ×

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

8ct Diamond (Marquise, 20.78×10.39mm, White) vs 5ct Diamond (Emerald, 11.42×8.46mm, White)


Quick summary: When looked from above (face-up position), 8ct Diamond (20.78×10.39mm, marquise cut) appears 71% larger than 5ct Diamond (11.42×8.46mm, emerald cut). See below how they compare side-by-side on a ring and finger.

8ct Diamond (marquise cut)
vs
 5ct Diamond (emerald cut)
white
 
white
20.78×10.39 mm 11.42×8.46 mm
actual size
Actual size of 8ct Diamond (marquise cut, 20.78×10.39mm, White color)   Actual size of 5ct Diamond (emerald cut, 11.42×8.46mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 8ct Diamond (marquise cut, 20.78×10.39mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 5ct Diamond (emerald cut, 11.42×8.46mm) 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
 62% vs 51%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 8ct Diamond Marquise (20.78×10.39mm, White) and 5ct Diamond Emerald (11.42×8.46mm, 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.


8 Ct Diamond (Marquise) 5 Ct Diamond (Emerald)
20.78×10.39 mm vs 11.42×8.46 mm
153.29 mm²   89.85 mm²
Face-up size outline for 8ct Diamond (20.78×10.39mm, marquise cut)
Face-up size outline for 5ct Diamond (11.42×8.46mm, emerald cut)
8ct Diamond Marquise (20.78×10.39mm)
5ct Diamond Emerald (11.42×8.46mm)
Difference: 71% (63.44 mm²)
8ct Diamond (Marquise, 20.78×10.39mm) has approx. 71% more face-up area than 5ct Diamond (Emerald, 11.42×8.46mm).


Popular comparisons: