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3ct Emerald (Round, 9.83×9.83mm, Green) vs 6ct Sapphire (Cushion, 10.16×10.16mm, Blue)


Quick summary: When looked from above (face-up position), 6ct Sapphire (10.16×10.16mm, cushion cut) appears 22% larger than 3ct Emerald (9.83×9.83mm, round cut). See below how they compare side-by-side on a ring and finger.

3ct Emerald (round cut)
vs
 6ct Sapphire (cushion cut)
green
 
blue
9.83×9.83 mm 10.16×10.16 mm
actual size
Actual size of 3ct Emerald (round cut, 9.83×9.83mm, Green color)   Actual size of 6ct Sapphire (cushion cut, 10.16×10.16mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Green 3ct Emerald (round cut, 9.83×9.83mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 6ct Sapphire (cushion cut, 10.16×10.16mm) 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
 59% vs 61%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 3ct Emerald Round (9.83×9.83mm, Green) and 6ct Sapphire Cushion (10.16×10.16mm, 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, Sapphire will face-up smaller than Emerald for a given carat weight, because it has higher specific gravity (4 vs. 2.72 - this means it's "heavier" compared to Emerald 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 Ct Emerald (Round) 6 Ct Sapphire (Cushion)
9.83×9.83 mm vs 10.16×10.16 mm
75.89 mm²   92.9 mm²
Face-up size outline for 6ct Sapphire (10.16×10.16mm, cushion cut)
Face-up size outline for 3ct Emerald (9.83×9.83mm, round cut)
3ct Emerald Round (9.83×9.83mm)
6ct Sapphire Cushion (10.16×10.16mm)
Difference: 22% (17.01 mm²)
6ct Sapphire (Cushion, 10.16×10.16mm) has approx. 22% more face-up area than 3ct Emerald (Round, 9.83×9.83mm).


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