×
carat vs. color  length*  width*
  ×

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

7.5ct Diamond (Marquise, 20.34×10.17mm, White) vs 12ct Diamond (Emerald, 15.3×11.33mm, White)


Quick summary: When looked from above (face-up position), 12ct Diamond (15.3×11.33mm, emerald cut) appears 10% larger than 7.5ct Diamond (20.34×10.17mm, marquise cut). See below how they compare side-by-side on a ring and finger.

7.5ct Diamond (marquise cut)
vs
 12ct Diamond (emerald cut)
white
 
white
20.34×10.17 mm 15.3×11.33 mm
actual size
Actual size of 7.5ct Diamond (marquise cut, 20.34×10.17mm, White color)   Actual size of 12ct Diamond (emerald cut, 15.3×11.33mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 7.5ct Diamond (marquise cut, 20.34×10.17mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 12ct Diamond (emerald cut, 15.3×11.33mm) 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
 61% vs 68%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 7.5ct Diamond Marquise (20.34×10.17mm, White) and 12ct Diamond Emerald (15.3×11.33mm, 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.


7.5 Ct Diamond (Marquise) 12 Ct Diamond (Emerald)
20.34×10.17 mm vs 15.3×11.33 mm
146.87 mm²   161.21 mm²
Face-up size outline for 12ct Diamond (15.3×11.33mm, emerald cut)
Face-up size outline for 7.5ct Diamond (20.34×10.17mm, marquise cut)
7.5ct Diamond Marquise (20.34×10.17mm)
12ct Diamond Emerald (15.3×11.33mm)
Difference: 10% (14.34 mm²)
12ct Diamond (Emerald, 15.3×11.33mm) has approx. 10% more face-up area than 7.5ct Diamond (Marquise, 20.34×10.17mm).


Popular comparisons: