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3.06ct Diamond (Princess, 10.42×7.09mm, Red) vs 5.07ct Sapphire (Cushion, 11.6×8.7mm, Violet)


Quick summary: When looked from above (face-up position), 5.07ct Sapphire (11.6×8.7mm, cushion cut) appears 23% larger than 3.06ct Diamond (10.42×7.09mm, princess cut). See below how they compare side-by-side on a ring and finger.

3.06ct Diamond (princess cut)
vs
5.07ct Sapphire (cushion cut)
red
 
violet
10.42×7.09 mm 11.6×8.7 mm
actual size
Actual size of 3.06ct Diamond (princess cut, 10.42×7.09mm, Red color)   Actual size of 5.07ct Sapphire (cushion cut, 11.6×8.7mm, Violet color)
 
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Ring: Skin tone:
Ring width: 3.0 mm
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Left finger image
Ring on left finger
Red 3.06ct Diamond (princess cut, 10.42×7.09mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Violet 5.07ct Sapphire (cushion cut, 11.6×8.7mm) 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
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Ring diameter: 16.9 mm
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Actual sizes of 3.06ct Diamond Princess (10.42×7.09mm, Red) and 5.07ct Sapphire Cushion (11.6×8.7mm, Violet) 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 Diamond for a given carat weight, because it has higher specific gravity (4 vs. 3.52 - this means it's "heavier" compared to Diamond 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.


3.06 Ct Diamond (Princess) 5.07 Ct Sapphire (Cushion)
10.42×7.09 mm vs 11.6×8.7 mm
73.88 mm²   90.83 mm²
Face-up size outline for 5.07ct Sapphire (11.6×8.7mm, cushion cut)
Face-up size outline for 3.06ct Diamond (10.42×7.09mm, princess cut)
3.06ct Diamond Princess (10.42×7.09mm)
5.07ct Sapphire Cushion (11.6×8.7mm)
Difference: 23% (16.95 mm²)
5.07ct Sapphire Cushion (11.6×8.7mm) has approx. 23% more face-up area than 3.06ct Diamond Princess (10.42×7.09mm).


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