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2.6ct Diamond (Oval, 11.16×7.44mm, White) vs 3.4ct Sapphire (Cushion, 9×7mm, Blue)


Quick summary: When looked from above (face-up position), 2.6ct Diamond (11.16×7.44mm, oval cut) appears 20% larger than 3.4ct Sapphire (9×7mm, cushion cut). See below how they compare side-by-side on a ring and finger.

2.6ct Diamond (oval cut)
vs
 3.4ct Sapphire (cushion cut)
white
 
blue
11.16×7.44 mm 9×7 mm
actual size
Actual size of 2.6ct Diamond (oval cut, 11.16×7.44mm, White color)   Actual size of 3.4ct Sapphire (cushion cut, 9×7mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 2.6ct Diamond (oval cut, 11.16×7.44mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 3.4ct Sapphire (cushion cut, 9×7mm) 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
Finger coverage
 45% vs 42%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 2.6ct Diamond Oval (11.16×7.44mm, White) and 3.4ct Sapphire Cushion (9×7mm, 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 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.


2.6 Ct Diamond (Oval) 3.4 Ct Sapphire (Cushion)
11.16×7.44 mm vs 9×7 mm
68.08 mm²   56.7 mm²
Face-up size outline for 2.6ct Diamond (11.16×7.44mm, oval cut)
Face-up size outline for 3.4ct Sapphire (9×7mm, cushion cut)
2.6ct Diamond Oval (11.16×7.44mm)
3.4ct Sapphire Cushion (9×7mm)
Difference: 20% (11.38 mm²)
2.6ct Diamond (Oval, 11.16×7.44mm) has approx. 20% more face-up area than 3.4ct Sapphire (Cushion, 9×7mm).


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