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0.3ct Diamond (Cushion, 3.9×3.9mm, White) vs 0.4ct Diamond (Cushion, 4.29×4.29mm, White)


Quick summary: When looked from above (face-up position), 0.4ct Diamond (4.29×4.29mm, cushion cut) appears 21% larger than 0.3ct Diamond (3.9×3.9mm, cushion cut). See below how they compare side-by-side on a ring and finger.

0.3ct Diamond (cushion cut)
vs
0.4ct Diamond (cushion cut)
white
 
white
3.9×3.9 mm 4.29×4.29 mm
actual size
Actual size of 0.3ct Diamond (cushion cut, 3.9×3.9mm, White color)   Actual size of 0.4ct Diamond (cushion cut, 4.29×4.29mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 0.3ct Diamond (cushion cut, 3.9×3.9mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 0.4ct Diamond (cushion cut, 4.29×4.29mm) 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
24% vs 26%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 0.3ct Diamond Cushion (3.9×3.9mm, White) and 0.4ct Diamond Cushion (4.29×4.29mm, 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.


0.3 Ct Diamond (Cushion) 0.4 Ct Diamond (Cushion)
3.9×3.9 mm vs 4.29×4.29 mm
13.69 mm²   16.56 mm²
Face-up size outline for 0.4ct Diamond (4.29×4.29mm, cushion cut)
Face-up size outline for 0.3ct Diamond (3.9×3.9mm, cushion cut)
0.3ct Diamond Cushion (3.9×3.9mm)
0.4ct Diamond Cushion (4.29×4.29mm)
Difference: 21% (2.87 mm²)
0.4ct Diamond (Cushion, 4.29×4.29mm) has approx. 21% more face-up area than 0.3ct Diamond (Cushion, 3.9×3.9mm).


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