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3ct Diamond (Cushion, 8.4×8.4mm, White) vs 4ct Diamond (Cushion, 9.25×9.25mm, White)


Quick summary: When looked from above (face-up position), 4ct Diamond (9.25×9.25mm, cushion cut) appears 21% larger than 3ct Diamond (8.4×8.4mm, cushion cut). See below how they compare side-by-side on a ring and finger.

3ct Diamond (cushion cut)
vs
 4ct Diamond (cushion cut)
white
 
white
8.4×8.4 mm 9.25×9.25 mm
actual size
Actual size of 3ct Diamond (cushion cut, 8.4×8.4mm, White color)   Actual size of 4ct Diamond (cushion cut, 9.25×9.25mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 3ct Diamond (cushion cut, 8.4×8.4mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 4ct Diamond (cushion cut, 9.25×9.25mm) 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
 50% vs 55%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 3ct Diamond Cushion (8.4×8.4mm, White) and 4ct Diamond Cushion (9.25×9.25mm, White) 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

The face-up size depends on the shape of the gem, its weight and 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 Diamond (Cushion) 4 Ct Diamond (Cushion)
8.4×8.4 mm vs 9.25×9.25 mm
63.5 mm²   77.01 mm²
Face-up size outline for 4ct Diamond (9.25×9.25mm, cushion cut)
Face-up size outline for 3ct Diamond (8.4×8.4mm, cushion cut)
3ct Diamond Cushion (8.4×8.4mm)
4ct Diamond Cushion (9.25×9.25mm)
Difference: 21% (13.51 mm²)
4ct Diamond (Cushion, 9.25×9.25mm) has approx. 21% more face-up area than 3ct Diamond (Cushion, 8.4×8.4mm).


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