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10ct Ruby (Cabochon, 14.75×9.83mm, Red) vs 10ct Emerald (Cabochon, 16.82×11.21mm, Bluish Green)


Quick summary: When looked from above (face-up position), 10ct Emerald (16.82×11.21mm, cabochon cut) appears 30% larger than 10ct Ruby (14.75×9.83mm, cabochon cut). See below how they compare side-by-side on a ring and finger.

10ct Ruby (cabochon cut)
vs
 10ct Emerald (cabochon cut)
red
 
bluish green
14.75×9.83 mm 16.82×11.21 mm
actual size
Actual size of 10ct Ruby (cabochon cut, 14.75×9.83mm, Red color)   Actual size of 10ct Emerald (cabochon cut, 16.82×11.21mm, Bluish Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Red 10ct Ruby (cabochon cut, 14.75×9.83mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Bluish Green 10ct Emerald (cabochon cut, 16.82×11.21mm) 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
 59% vs 67%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 10ct Ruby Cabochon (14.75×9.83mm, Red) and 10ct Emerald Cabochon (16.82×11.21mm, 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, Ruby will face-up smaller than Emerald for a given carat weight, because it has higher specific gravity (4 vs. 2.72 - this means it's "heavier" compared to Emerald 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.


10 Ct Ruby (Cabochon) 10 Ct Emerald (Cabochon)
14.75×9.83 mm vs 16.82×11.21 mm
118.89 mm²   154.61 mm²
Face-up size outline for 10ct Emerald (16.82×11.21mm, cabochon cut)
Face-up size outline for 10ct Ruby (14.75×9.83mm, cabochon cut)
10ct Ruby Cabochon (14.75×9.83mm)
10ct Emerald Cabochon (16.82×11.21mm)
Difference: 30% (35.72 mm²)
10ct Emerald (Cabochon, 16.82×11.21mm) has approx. 30% more face-up area than 10ct Ruby (Cabochon, 14.75×9.83mm).


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