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2.8ct Diamond (Round, 9.16×9.16mm, White) vs 4.4ct Aquamarine (Emerald, 11.38×7.95mm, Light Blue)


Quick summary: When looked from above (face-up position), 4.4ct Aquamarine (11.38×7.95mm, emerald cut) appears 28% larger than 2.8ct Diamond (9.16×9.16mm, round cut). See below how they compare side-by-side on a ring and finger.

2.8ct Diamond (round cut)
vs
 4.4ct Aquamarine (emerald cut)
white
 
light blue
9.16×9.16 mm 11.38×7.95 mm
actual size
Actual size of 2.8ct Diamond (round cut, 9.16×9.16mm, White color)   Actual size of 4.4ct Aquamarine (emerald cut, 11.38×7.95mm, Light Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 2.8ct Diamond (round cut, 9.16×9.16mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Light Blue 4.4ct Aquamarine (emerald cut, 11.38×7.95mm) 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
 55% vs 48%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 2.8ct Diamond Round (9.16×9.16mm, White) and 4.4ct Aquamarine Emerald (11.38×7.95mm, Light Blue) 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 Aquamarine for a given carat weight, because it has higher specific gravity (3.52 vs. 2.72 - this means it's "heavier" compared to Aquamarine 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.


2.8 Ct Diamond (Round) 4.4 Ct Aquamarine (Emerald)
9.16×9.16 mm vs 11.38×7.95 mm
65.9 mm²   84.14 mm²
Face-up size outline for 4.4ct Aquamarine (11.38×7.95mm, emerald cut)
Face-up size outline for 2.8ct Diamond (9.16×9.16mm, round cut)
2.8ct Diamond Round (9.16×9.16mm)
4.4ct Aquamarine Emerald (11.38×7.95mm)
Difference: 28% (18.24 mm²)
4.4ct Aquamarine (Emerald, 11.38×7.95mm) has approx. 28% more face-up area than 2.8ct Diamond (Round, 9.16×9.16mm).


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