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3.5ct Ruby (Round, 9.08×9.08mm, Red) vs 5ct Benitoite (Emerald, 11.26×8.34mm, Blue)


Quick summary: When looked from above (face-up position), 5ct Benitoite (11.26×8.34mm, emerald cut) appears 35% larger than 3.5ct Ruby (9.08×9.08mm, round cut). See below how they compare side-by-side on a ring and finger.

3.5ct Ruby (round cut)
vs
 5ct Benitoite (emerald cut)
red
 
blue
9.08×9.08 mm 11.26×8.34 mm
actual size
Actual size of 3.5ct Ruby (round cut, 9.08×9.08mm, Red color)   Actual size of 5ct Benitoite (emerald cut, 11.26×8.34mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Red 3.5ct Ruby (round cut, 9.08×9.08mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 5ct Benitoite (emerald cut, 11.26×8.34mm) 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
 54% vs 50%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 3.5ct Ruby Round (9.08×9.08mm, Red) and 5ct Benitoite Emerald (11.26×8.34mm, Blue) 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 Benitoite for a given carat weight, because it has higher specific gravity (4 vs. 3.65 - this means it's "heavier" compared to Benitoite 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.


3.5 Ct Ruby (Round) 5 Ct Benitoite (Emerald)
9.08×9.08 mm vs 11.26×8.34 mm
64.75 mm²   87.33 mm²
Face-up size outline for 5ct Benitoite (11.26×8.34mm, emerald cut)
Face-up size outline for 3.5ct Ruby (9.08×9.08mm, round cut)
3.5ct Ruby Round (9.08×9.08mm)
5ct Benitoite Emerald (11.26×8.34mm)
Difference: 35% (22.58 mm²)
5ct Benitoite (Emerald, 11.26×8.34mm) has approx. 35% more face-up area than 3.5ct Ruby (Round, 9.08×9.08mm).


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