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2.1ct Emerald (Emerald, 9.32×6.9mm, Green) vs 2.5ct Diamond (Oval, 11.01×7.34mm, White)


Quick summary: When looked from above (face-up position), 2.5ct Diamond (11.01×7.34mm, oval cut) appears 11% larger than 2.1ct Emerald (9.32×6.9mm, emerald cut). See below how they compare side-by-side on a ring and finger.

2.1ct Emerald (emerald cut)
vs
 2.5ct Diamond (oval cut)
green
 
white
9.32×6.9 mm 11.01×7.34 mm
actual size
Actual size of 2.1ct Emerald (emerald cut, 9.32×6.9mm, Green color)   Actual size of 2.5ct Diamond (oval cut, 11.01×7.34mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Green 2.1ct Emerald (emerald cut, 9.32×6.9mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 2.5ct Diamond (oval cut, 11.01×7.34mm) 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
 41% vs 44%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 2.1ct Emerald Emerald (9.32×6.9mm, Green) and 2.5ct Diamond Oval (11.01×7.34mm, 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.


2.1 Ct Emerald (Emerald) 2.5 Ct Diamond (Oval)
9.32×6.9 mm vs 11.01×7.34 mm
59.81 mm²   66.27 mm²
Face-up size outline for 2.5ct Diamond (11.01×7.34mm, oval cut)
Face-up size outline for 2.1ct Emerald (9.32×6.9mm, emerald cut)
2.1ct Emerald Emerald (9.32×6.9mm)
2.5ct Diamond Oval (11.01×7.34mm)
Difference: 11% (6.46 mm²)
2.5ct Diamond (Oval, 11.01×7.34mm) has approx. 11% more face-up area than 2.1ct Emerald (Emerald, 9.32×6.9mm).


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