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40ct Ruby (Emerald, 21.84×16.18mm, Red) vs 3ct Sapphire (Emerald, 9.21×6.82mm, Blue)


Quick summary: When looked from above (face-up position), 40ct Ruby (21.84×16.18mm, emerald cut) appears 5.6 times larger than 3ct Sapphire (9.21×6.82mm, emerald cut). See below how they compare side-by-side on a ring and finger.

40ct Ruby (emerald cut)
vs
 3ct Sapphire (emerald cut)
red
 
blue
21.84×16.18 mm 9.21×6.82 mm
actual size
Actual size of 40ct Ruby (emerald cut, 21.84×16.18mm, Red color)   Actual size of 3ct Sapphire (emerald cut, 9.21×6.82mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Red 40ct Ruby (emerald cut, 21.84×16.18mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 3ct Sapphire (emerald cut, 9.21×6.82mm) 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
 96% vs 41%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 40ct Ruby Emerald (21.84×16.18mm, Red) and 3ct Sapphire Emerald (9.21×6.82mm, 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

Ruby and Sapphire have the same specific gravity so their face-up size depends on the weight, shape and 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.


40 Ct Ruby (Emerald) 3 Ct Sapphire (Emerald)
21.84×16.18 mm vs 9.21×6.82 mm
328.64 mm²   58.42 mm²
Face-up size outline for 40ct Ruby (21.84×16.18mm, emerald cut)
Face-up size outline for 3ct Sapphire (9.21×6.82mm, emerald cut)
40ct Ruby Emerald (21.84×16.18mm)
3ct Sapphire Emerald (9.21×6.82mm)
Difference: 463% (270.22 mm²)
40ct Ruby (Emerald, 21.84×16.18mm) has approx. 463% more face-up area than 3ct Sapphire (Emerald, 9.21×6.82mm). In other words, it's 5.63x larger.


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