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1ct Emerald (Princess, 6.13×6.13mm, Green) vs 2.5ct Diamond (Emerald, 9.07×6.72mm, White)


Quick summary: When looked from above (face-up position), 2.5ct Diamond (9.07×6.72mm, emerald cut) appears 51% larger than 1ct Emerald (6.13×6.13mm, princess cut). See below how they compare side-by-side on a ring and finger.

1ct Emerald (princess cut)
vs
2.5ct Diamond (emerald cut)
green
 
white
6.13×6.13 mm 9.07×6.72 mm
actual size
Actual size of 1ct Emerald (princess cut, 6.13×6.13mm, Green color)   Actual size of 2.5ct Diamond (emerald cut, 9.07×6.72mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Green 1ct Emerald (princess cut, 6.13×6.13mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 2.5ct Diamond (emerald cut, 9.07×6.72mm) 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
37% vs 40%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 1ct Emerald Princess (6.13×6.13mm, Green) and 2.5ct Diamond Emerald (9.07×6.72mm, 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.


1 Ct Emerald (Princess) 2.5 Ct Diamond (Emerald)
6.13×6.13 mm vs 9.07×6.72 mm
37.58 mm²   56.68 mm²
Face-up size outline for 2.5ct Diamond (9.07×6.72mm, emerald cut)
Face-up size outline for 1ct Emerald (6.13×6.13mm, princess cut)
1ct Emerald Princess (6.13×6.13mm)
2.5ct Diamond Emerald (9.07×6.72mm)
Difference: 51% (19.1 mm²)
2.5ct Diamond (Emerald, 9.07×6.72mm) has approx. 51% more face-up area than 1ct Emerald (Princess, 6.13×6.13mm).


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