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0.25ct Diamond (Emerald, 4.21×3.12mm, White) vs 0.5ct Diamond (Round, 5.16×5.16mm, White)


Quick summary: When looked from above (face-up position), 0.5ct Diamond (5.16×5.16mm, round cut) appears 71% larger than 0.25ct Diamond (4.21×3.12mm, emerald cut). See below how they compare side-by-side on a ring and finger.

0.25ct Diamond (emerald cut)
vs
 0.5ct Diamond (round cut)
white
 
white
4.21×3.12 mm 5.16×5.16 mm
actual size
Actual size of 0.25ct Diamond (emerald cut, 4.21×3.12mm, White color)   Actual size of 0.5ct Diamond (round cut, 5.16×5.16mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 0.25ct Diamond (emerald cut, 4.21×3.12mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 0.5ct Diamond (round cut, 5.16×5.16mm) 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
 19% vs 31%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 0.25ct Diamond Emerald (4.21×3.12mm, White) and 0.5ct Diamond Round (5.16×5.16mm, 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.


0.25 Ct Diamond (Emerald) 0.5 Ct Diamond (Round)
4.21×3.12 mm vs 5.16×5.16 mm
12.22 mm²   20.91 mm²
Face-up size outline for 0.5ct Diamond (5.16×5.16mm, round cut)
Face-up size outline for 0.25ct Diamond (4.21×3.12mm, emerald cut)
0.25ct Diamond Emerald (4.21×3.12mm)
0.5ct Diamond Round (5.16×5.16mm)
Difference: 71% (8.69 mm²)
0.5ct Diamond (Round, 5.16×5.16mm) has approx. 71% more face-up area than 0.25ct Diamond (Emerald, 4.21×3.12mm).


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