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2.8ct Aquamarine (Marquise, 15.86×7.93mm, Light Blue) vs 2.8ct Diamond (Marquise, 14.64×7.32mm, White)


Quick summary: When looked from above (face-up position), 2.8ct Aquamarine (15.86×7.93mm, marquise cut) appears 17% larger than 2.8ct Diamond (14.64×7.32mm, marquise cut). See below how they compare side-by-side on a ring and finger.

2.8ct Aquamarine (marquise cut)
vs
 2.8ct Diamond (marquise cut)
light blue
 
white
15.86×7.93 mm 14.64×7.32 mm
actual size
Actual size of 2.8ct Aquamarine (marquise cut, 15.86×7.93mm, Light Blue color)   Actual size of 2.8ct Diamond (marquise cut, 14.64×7.32mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Light Blue 2.8ct Aquamarine (marquise cut, 15.86×7.93mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 2.8ct Diamond (marquise cut, 14.64×7.32mm) 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
 47% vs 44%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 2.8ct Aquamarine Marquise (15.86×7.93mm, Light Blue) and 2.8ct Diamond Marquise (14.64×7.32mm, 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 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 Aquamarine (Marquise) 2.8 Ct Diamond (Marquise)
15.86×7.93 mm vs 14.64×7.32 mm
89.3 mm²   76.09 mm²
Face-up size outline for 2.8ct Aquamarine (15.86×7.93mm, marquise cut)
Face-up size outline for 2.8ct Diamond (14.64×7.32mm, marquise cut)
2.8ct Aquamarine Marquise (15.86×7.93mm)
2.8ct Diamond Marquise (14.64×7.32mm)
Difference: 17% (13.21 mm²)
2.8ct Aquamarine (Marquise, 15.86×7.93mm) has approx. 17% more face-up area than 2.8ct Diamond (Marquise, 14.64×7.32mm).


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