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3ct Moissanite (Emerald, 9.9×7.33mm, White) vs 3ct Diamond (Emerald, 9.64×7.14mm, White)


Quick summary: When looked from above (face-up position), 3ct Moissanite (9.9×7.33mm, emerald cut) appears 5% larger than 3ct Diamond (9.64×7.14mm, emerald cut). See below how they compare side-by-side on a ring and finger.

3ct Moissanite (emerald cut)
vs
 3ct Diamond (emerald cut)
white
 
white
9.9×7.33 mm 9.64×7.14 mm
actual size
Actual size of 3ct Moissanite (emerald cut, 9.9×7.33mm, White color)   Actual size of 3ct Diamond (emerald cut, 9.64×7.14mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 3ct Moissanite (emerald cut, 9.9×7.33mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 3ct Diamond (emerald cut, 9.64×7.14mm) 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
 44% vs 43%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 3ct Moissanite Emerald (9.9×7.33mm, White) and 3ct Diamond Emerald (9.64×7.14mm, 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 Moissanite for a given carat weight, because it has higher specific gravity (3.52 vs. 3.22 - this means it's "heavier" compared to Moissanite 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.


3 Ct Moissanite (Emerald) 3 Ct Diamond (Emerald)
9.9×7.33 mm vs 9.64×7.14 mm
67.49 mm²   64.01 mm²
Face-up size outline for 3ct Moissanite (9.9×7.33mm, emerald cut)
Face-up size outline for 3ct Diamond (9.64×7.14mm, emerald cut)
3ct Moissanite Emerald (9.9×7.33mm)
3ct Diamond Emerald (9.64×7.14mm)
Difference: 5% (3.48 mm²)
3ct Moissanite (Emerald, 9.9×7.33mm) has approx. 5% more face-up area than 3ct Diamond (Emerald, 9.64×7.14mm).


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