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2.5ct Ruby (Cabochon, 9.29×6.19mm, Red) vs 2.5ct Pyrope (Cabochon, 9.47×6.31mm, Red)


Quick summary: When looked from above (face-up position), 2.5ct Pyrope (9.47×6.31mm, cabochon cut) appears 4% larger than 2.5ct Ruby (9.29×6.19mm, cabochon cut). See below how they compare side-by-side on a ring and finger.

2.5ct Ruby (cabochon cut)
vs
 2.5ct Pyrope (cabochon cut)
red
 
red
9.29×6.19 mm 9.47×6.31 mm
actual size
Actual size of 2.5ct Ruby (cabochon cut, 9.29×6.19mm, Red color)   Actual size of 2.5ct Pyrope (cabochon cut, 9.47×6.31mm, Red color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Red 2.5ct Ruby (cabochon cut, 9.29×6.19mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Red 2.5ct Pyrope (cabochon cut, 9.47×6.31mm) 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
 37% vs 38%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 2.5ct Ruby Cabochon (9.29×6.19mm, Red) and 2.5ct Pyrope Cabochon (9.47×6.31mm, 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.


2.5 Ct Ruby (Cabochon) 2.5 Ct Pyrope (Cabochon)
9.29×6.19 mm vs 9.47×6.31 mm
47.15 mm²   49 mm²
Face-up size outline for 2.5ct Pyrope (9.47×6.31mm, cabochon cut)
Face-up size outline for 2.5ct Ruby (9.29×6.19mm, cabochon cut)
2.5ct Ruby Cabochon (9.29×6.19mm)
2.5ct Pyrope Cabochon (9.47×6.31mm)
Difference: 4% (1.85 mm²)
2.5ct Pyrope (Cabochon, 9.47×6.31mm) has approx. 4% more face-up area than 2.5ct Ruby (Cabochon, 9.29×6.19mm).


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