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7ct Diamond (Oval, 15.53×10.35mm, White) vs 15ct Aquamarine (Emerald, 17.96×13.3mm, Light Bluish Green)


Quick summary: When looked from above (face-up position), 15ct Aquamarine (17.96×13.3mm, emerald cut) appears 69% larger than 7ct Diamond (15.53×10.35mm, oval cut). See below how they compare side-by-side on a ring and finger.

7ct Diamond (oval cut)
vs
 15ct Aquamarine (emerald cut)
white
 
light bluish green
15.53×10.35 mm 17.96×13.3 mm
actual size
Actual size of 7ct Diamond (oval cut, 15.53×10.35mm, White color)   Actual size of 15ct Aquamarine (emerald cut, 17.96×13.3mm, Light Bluish Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 7ct Diamond (oval cut, 15.53×10.35mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Light Bluish Green 15ct Aquamarine (emerald cut, 17.96×13.3mm) 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
 62% vs 79%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 7ct Diamond Oval (15.53×10.35mm, White) and 15ct Aquamarine Emerald (17.96×13.3mm, Light Bluish 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 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.


7 Ct Diamond (Oval) 15 Ct Aquamarine (Emerald)
15.53×10.35 mm vs 17.96×13.3 mm
131.8 mm²   222.15 mm²
Face-up size outline for 15ct Aquamarine (17.96×13.3mm, emerald cut)
Face-up size outline for 7ct Diamond (15.53×10.35mm, oval cut)
7ct Diamond Oval (15.53×10.35mm)
15ct Aquamarine Emerald (17.96×13.3mm)
Difference: 69% (90.35 mm²)
15ct Aquamarine (Emerald, 17.96×13.3mm) has approx. 69% more face-up area than 7ct Diamond (Oval, 15.53×10.35mm).


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