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9ct Diamond (Oval, 16.88×11.25mm, White) vs 1.5ct Aquamarine (Emerald, 8.33×6.17mm, Light Blue)


Quick summary: When looked from above (face-up position), 9ct Diamond (16.88×11.25mm, oval cut) appears 3.3 times larger than 1.5ct Aquamarine (8.33×6.17mm, emerald cut). See below how they compare side-by-side on a ring and finger.

9ct Diamond (oval cut)
vs
 1.5ct Aquamarine (emerald cut)
white
 
light blue
16.88×11.25 mm 8.33×6.17 mm
actual size
Actual size of 9ct Diamond (oval cut, 16.88×11.25mm, White color)   Actual size of 1.5ct Aquamarine (emerald cut, 8.33×6.17mm, 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 9ct Diamond (oval cut, 16.88×11.25mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Light Blue 1.5ct Aquamarine (emerald cut, 8.33×6.17mm) 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
 67% vs 37%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 9ct Diamond Oval (16.88×11.25mm, White) and 1.5ct Aquamarine Emerald (8.33×6.17mm, 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.


9 Ct Diamond (Oval) 1.5 Ct Aquamarine (Emerald)
16.88×11.25 mm vs 8.33×6.17 mm
155.72 mm²   47.8 mm²
Face-up size outline for 9ct Diamond (16.88×11.25mm, oval cut)
Face-up size outline for 1.5ct Aquamarine (8.33×6.17mm, emerald cut)
9ct Diamond Oval (16.88×11.25mm)
1.5ct Aquamarine Emerald (8.33×6.17mm)
Difference: 226% (107.92 mm²)
9ct Diamond (Oval, 16.88×11.25mm) has approx. 226% more face-up area than 1.5ct Aquamarine (Emerald, 8.33×6.17mm). In other words, it's 3.26x larger.


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