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20ct Diamond (Round, 17.64×17.64mm, White) vs 15ct Diamond (Emerald, 16.48×12.21mm, White)


Quick summary: When looked from above (face-up position), 20ct Diamond (17.64×17.64mm, round cut) appears 31% larger than 15ct Diamond (16.48×12.21mm, emerald cut). See below how they compare side-by-side on a ring and finger.

20ct Diamond (round cut)
vs
 15ct Diamond (emerald cut)
white
 
white
17.64×17.64 mm 16.48×12.21 mm
actual size
Actual size of 20ct Diamond (round cut, 17.64×17.64mm, White color)   Actual size of 15ct Diamond (emerald cut, 16.48×12.21mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 20ct Diamond (round cut, 17.64×17.64mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 15ct Diamond (emerald cut, 16.48×12.21mm) 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
 105% vs 73%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 20ct Diamond Round (17.64×17.64mm, White) and 15ct Diamond Emerald (16.48×12.21mm, 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.


20 Ct Diamond (Round) 15 Ct Diamond (Emerald)
17.64×17.64 mm vs 16.48×12.21 mm
244.39 mm²   187.14 mm²
Face-up size outline for 20ct Diamond (17.64×17.64mm, round cut)
Face-up size outline for 15ct Diamond (16.48×12.21mm, emerald cut)
20ct Diamond Round (17.64×17.64mm)
15ct Diamond Emerald (16.48×12.21mm)
Difference: 31% (57.25 mm²)
20ct Diamond (Round, 17.64×17.64mm) has approx. 31% more face-up area than 15ct Diamond (Emerald, 16.48×12.21mm).


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