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8ct Peridot (Round, 12.68×12.68mm, Yellowish Green) vs 8ct Ruby (Emerald, 12.77×9.46mm, Red)


Quick summary: When looked from above (face-up position), 8ct Peridot (12.68×12.68mm, round cut) appears 12% larger than 8ct Ruby (12.77×9.46mm, emerald cut). See below how they compare side-by-side on a ring and finger.

8ct Peridot (round cut)
vs
 8ct Ruby (emerald cut)
yellowish green
 
red
12.68×12.68 mm 12.77×9.46 mm
actual size
Actual size of 8ct Peridot (round cut, 12.68×12.68mm, Yellowish Green color)   Actual size of 8ct Ruby (emerald cut, 12.77×9.46mm, Red color)
 
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Left finger image
Ring on left finger
Yellowish Green 8ct Peridot (round cut, 12.68×12.68mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Red 8ct Ruby (emerald cut, 12.77×9.46mm) 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
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Ring diameter: 16.9 mm
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Actual sizes of 8ct Peridot Round (12.68×12.68mm, Yellowish Green) and 8ct Ruby Emerald (12.77×9.46mm, 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 Peridot for a given carat weight, because it has higher specific gravity (4 vs. 3.35 - this means it's "heavier" compared to Peridot 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.


8 Ct Peridot (Round) 8 Ct Ruby (Emerald)
12.68×12.68 mm vs 12.77×9.46 mm
126.28 mm²   112.35 mm²
Face-up size outline for 8ct Peridot (12.68×12.68mm, round cut)
Face-up size outline for 8ct Ruby (12.77×9.46mm, emerald cut)
8ct Peridot Round (12.68×12.68mm)
8ct Ruby Emerald (12.77×9.46mm)
Difference: 12% (13.93 mm²)
8ct Peridot Round (12.68×12.68mm) has approx. 12% more face-up area than 8ct Ruby Emerald (12.77×9.46mm).


Popular comparisons:

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