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0.1ct Emerald (Emerald, 3.38×2.5mm, Green) vs 0.25ct Diamond (Emerald, 4.21×3.12mm, White)


Quick summary: When looked from above (face-up position), 0.25ct Diamond (4.21×3.12mm, emerald cut) appears 55% larger than 0.1ct Emerald (3.38×2.5mm, emerald cut). See below how they compare side-by-side on a ring and finger.

0.1ct Emerald (emerald cut)
vs
 0.25ct Diamond (emerald cut)
green
 
white
3.38×2.5 mm 4.21×3.12 mm
actual size
Actual size of 0.1ct Emerald (emerald cut, 3.38×2.5mm, Green color)   Actual size of 0.25ct Diamond (emerald cut, 4.21×3.12mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Green 0.1ct Emerald (emerald cut, 3.38×2.5mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 0.25ct Diamond (emerald cut, 4.21×3.12mm) 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
 15% vs 19%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 0.1ct Emerald Emerald (3.38×2.5mm, Green) and 0.25ct Diamond Emerald (4.21×3.12mm, 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

All things being equal, Diamond will face-up smaller than Emerald for a given carat weight, because it has higher specific gravity (3.52 vs. 2.72 - this means it's "heavier" compared to Emerald of the same size). Face-up size also depends heavily on 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.


0.1 Ct Emerald (Emerald) 0.25 Ct Diamond (Emerald)
3.38×2.5 mm vs 4.21×3.12 mm
7.86 mm²   12.22 mm²
Face-up size outline for 0.25ct Diamond (4.21×3.12mm, emerald cut)
Face-up size outline for 0.1ct Emerald (3.38×2.5mm, emerald cut)
0.1ct Emerald Emerald (3.38×2.5mm)
0.25ct Diamond Emerald (4.21×3.12mm)
Difference: 55% (4.36 mm²)
0.25ct Diamond (Emerald, 4.21×3.12mm) has approx. 55% more face-up area than 0.1ct Emerald (Emerald, 3.38×2.5mm).


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