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2.5ct Emerald (Emerald, 9×7mm, Green) vs 2.5ct Diamond (Princess, 7.48×7.48mm, White)


Quick summary: When looked from above (face-up position), 2.5ct Emerald (9×7mm, emerald cut) appears 5% larger than 2.5ct Diamond (7.48×7.48mm, princess cut). See below how they compare side-by-side on a ring and finger.

2.5ct Emerald (emerald cut)
vs
 2.5ct Diamond (princess cut)
green
 
white
9×7 mm 7.48×7.48 mm
actual size
Actual size of 2.5ct Emerald (emerald cut, 9×7mm, Green color)   Actual size of 2.5ct Diamond (princess cut, 7.48×7.48mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Green 2.5ct Emerald (emerald cut, 9×7mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 2.5ct Diamond (princess cut, 7.48×7.48mm) 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
 42% vs 45%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 2.5ct Emerald Emerald (9×7mm, Green) and 2.5ct Diamond Princess (7.48×7.48mm, 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.


2.5 Ct Emerald (Emerald) 2.5 Ct Diamond (Princess)
9×7 mm vs 7.48×7.48 mm
58.59 mm²   55.95 mm²
Face-up size outline for 2.5ct Emerald (9×7mm, emerald cut)
Face-up size outline for 2.5ct Diamond (7.48×7.48mm, princess cut)
2.5ct Emerald Emerald (9×7mm)
2.5ct Diamond Princess (7.48×7.48mm)
Difference: 5% (2.64 mm²)
2.5ct Emerald (Emerald, 9×7mm) has approx. 5% more face-up area than 2.5ct Diamond (Princess, 7.48×7.48mm).


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