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4ct Diamond (Oval, 11×9mm, White) vs 2ct Emerald (Oval, 10×8mm, Green)


Quick summary: When looked from above (face-up position), 4ct Diamond (11×9mm, oval cut) appears 24% larger than 2ct Emerald (10×8mm, oval cut). See below how they compare side-by-side on a ring and finger.

4ct Diamond (oval cut)
vs
 2ct Emerald (oval cut)
white
 
green
11×9 mm 10×8 mm
actual size
Actual size of 4ct Diamond (oval cut, 11×9mm, White color)   Actual size of 2ct Emerald (oval cut, 10×8mm, Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 4ct Diamond (oval cut, 11×9mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Green 2ct Emerald (oval cut, 10×8mm) 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
 54% vs 48%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 4ct Diamond Oval (11×9mm, White) and 2ct Emerald Oval (10×8mm, Green) 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.


4 Ct Diamond (Oval) 2 Ct Emerald (Oval)
11×9 mm vs 10×8 mm
81.18 mm²   65.6 mm²
Face-up size outline for 4ct Diamond (11×9mm, oval cut)
Face-up size outline for 2ct Emerald (10×8mm, oval cut)
4ct Diamond Oval (11×9mm)
2ct Emerald Oval (10×8mm)
Difference: 24% (15.58 mm²)
4ct Diamond (Oval, 11×9mm) has approx. 24% more face-up area than 2ct Emerald (Oval, 10×8mm).


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