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10ct Ruby (Round, 12.88×12.88mm, Red) vs 10ct Peridot (Emerald, 14.59×10.81mm, Yellowish Green)


Quick summary: When looked from above (face-up position), 10ct Peridot (14.59×10.81mm, emerald cut) appears 13% larger than 10ct Ruby (12.88×12.88mm, round cut). See below how they compare side-by-side on a ring and finger.

10ct Ruby (round cut)
vs
 10ct Peridot (emerald cut)
red
 
yellowish green
12.88×12.88 mm 14.59×10.81 mm
actual size
Actual size of 10ct Ruby (round cut, 12.88×12.88mm, Red color)   Actual size of 10ct Peridot (emerald cut, 14.59×10.81mm, Yellowish 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 (round cut, 12.88×12.88mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Yellowish Green 10ct Peridot (emerald cut, 14.59×10.81mm) 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
 77% vs 64%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 10ct Ruby Round (12.88×12.88mm, Red) and 10ct Peridot Emerald (14.59×10.81mm, Yellowish 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 Peridot for a given carat weight, because it has higher specific gravity (4 vs. 3.34 - 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.


10 Ct Ruby (Round) 10 Ct Peridot (Emerald)
12.88×12.88 mm vs 14.59×10.81 mm
130.29 mm²   146.68 mm²
Face-up size outline for 10ct Peridot (14.59×10.81mm, emerald cut)
Face-up size outline for 10ct Ruby (12.88×12.88mm, round cut)
10ct Ruby Round (12.88×12.88mm)
10ct Peridot Emerald (14.59×10.81mm)
Difference: 13% (16.39 mm²)
10ct Peridot (Emerald, 14.59×10.81mm) has approx. 13% more face-up area than 10ct Ruby (Round, 12.88×12.88mm).


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