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9ct Ruby (Round, 12.44×12.44mm, Red) vs 9ct Pyrope (Round, 12.67×12.67mm, Red)


Quick summary: When looked from above (face-up position), 9ct Pyrope (12.67×12.67mm, round cut) appears 4% larger than 9ct Ruby (12.44×12.44mm, round cut). See below how they compare side-by-side on a ring and finger.

9ct Ruby (round cut)
vs
 9ct Pyrope (round cut)
red
 
red
12.44×12.44 mm 12.67×12.67 mm
actual size
Actual size of 9ct Ruby (round cut, 12.44×12.44mm, Red color)   Actual size of 9ct Pyrope (round cut, 12.67×12.67mm, Red color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Red 9ct Ruby (round cut, 12.44×12.44mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Red 9ct Pyrope (round cut, 12.67×12.67mm) 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
 74% vs 75%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 9ct Ruby Round (12.44×12.44mm, Red) and 9ct Pyrope Round (12.67×12.67mm, 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 Pyrope for a given carat weight, because it has higher specific gravity (4 vs. 3.78 - this means it's "heavier" compared to Pyrope 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 Ruby (Round) 9 Ct Pyrope (Round)
12.44×12.44 mm vs 12.67×12.67 mm
121.54 mm²   126.08 mm²
Face-up size outline for 9ct Pyrope (12.67×12.67mm, round cut)
Face-up size outline for 9ct Ruby (12.44×12.44mm, round cut)
9ct Ruby Round (12.44×12.44mm)
9ct Pyrope Round (12.67×12.67mm)
Difference: 4% (4.54 mm²)
9ct Pyrope (Round, 12.67×12.67mm) has approx. 4% more face-up area than 9ct Ruby (Round, 12.44×12.44mm).


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