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2.5ct Ruby (Round, 8.11×8.11mm, Red) vs 3.47ct Ruby (Round, 9.05×9.05mm, Red)


Quick summary: When looked from above (face-up position), 3.47ct Ruby (9.05×9.05mm, round cut) appears 25% larger than 2.5ct Ruby (8.11×8.11mm, round cut). See below how they compare side-by-side on a ring and finger.

2.5ct Ruby (round cut)
vs
 3.47ct Ruby (round cut)
red
 
red
8.11×8.11 mm 9.05×9.05 mm
actual size
Actual size of 2.5ct Ruby (round cut, 8.11×8.11mm, Red color)   Actual size of 3.47ct Ruby (round cut, 9.05×9.05mm, 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 (round cut, 8.11×8.11mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Red 3.47ct Ruby (round cut, 9.05×9.05mm) 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
 48% vs 54%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 2.5ct Ruby Round (8.11×8.11mm, Red) and 3.47ct Ruby Round (9.05×9.05mm, 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

The face-up size depends on the shape of the gem, its weight and 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 (Round) 3.47 Ct Ruby (Round)
8.11×8.11 mm vs 9.05×9.05 mm
51.66 mm²   64.33 mm²
Face-up size outline for 3.47ct Ruby (9.05×9.05mm, round cut)
Face-up size outline for 2.5ct Ruby (8.11×8.11mm, round cut)
2.5ct Ruby Round (8.11×8.11mm)
3.47ct Ruby Round (9.05×9.05mm)
Difference: 25% (12.67 mm²)
3.47ct Ruby (Round, 9.05×9.05mm) has approx. 25% more face-up area than 2.5ct Ruby (Round, 8.11×8.11mm).


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