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5ct Emerald (Cabochon, 13.34×8.89mm, Green) vs 5ct Ruby (Cabochon, 11.7×7.8mm, Red)


Quick summary: When looked from above (face-up position), 5ct Emerald (13.34×8.89mm, cabochon cut) appears 30% larger than 5ct Ruby (11.7×7.8mm, cabochon cut). See below how they compare side-by-side on a ring and finger.

5ct Emerald (cabochon cut)
vs
5ct Ruby (cabochon cut)
green
 
red
13.34×8.89 mm 11.7×7.8 mm
actual size
Actual size of 5ct Emerald (cabochon cut, 13.34×8.89mm, Green color)   Actual size of 5ct Ruby (cabochon cut, 11.7×7.8mm, Red color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Green 5ct Emerald (cabochon cut, 13.34×8.89mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Red 5ct Ruby (cabochon cut, 11.7×7.8mm) 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
53% vs 47%
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Ring diameter: 16.9 mm
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Actual sizes of 5ct Emerald Cabochon (13.34×8.89mm, Green) and 5ct Ruby Cabochon (11.7×7.8mm, Red) 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.


5 Ct Emerald (Cabochon) 5 Ct Ruby (Cabochon)
13.34×8.89 mm vs 11.7×7.8 mm
97.25 mm²   74.83 mm²
Face-up size outline for 5ct Emerald (13.34×8.89mm, cabochon cut)
Face-up size outline for 5ct Ruby (11.7×7.8mm, cabochon cut)
5ct Emerald Cabochon (13.34×8.89mm)
5ct Ruby Cabochon (11.7×7.8mm)
Difference: 30% (22.42 mm²)
5ct Emerald (Cabochon, 13.34×8.89mm) has approx. 30% more face-up area than 5ct Ruby (Cabochon, 11.7×7.8mm).


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