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2.8ct Diamond (Round, 9.16×9.16mm, White) vs 1.8ct Diamond (Round, 7.91×7.91mm, White)


Quick summary: When looked from above (face-up position), 2.8ct Diamond (9.16×9.16mm, round cut) appears 34% larger than 1.8ct Diamond (7.91×7.91mm, round cut). See below how they compare side-by-side on a ring and finger.

2.8ct Diamond (round cut)
vs
 1.8ct Diamond (round cut)
white
 
white
9.16×9.16 mm 7.91×7.91 mm
actual size
Actual size of 2.8ct Diamond (round cut, 9.16×9.16mm, White color)   Actual size of 1.8ct Diamond (round cut, 7.91×7.91mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 2.8ct Diamond (round cut, 9.16×9.16mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 1.8ct Diamond (round cut, 7.91×7.91mm) 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
 55% vs 47%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 2.8ct Diamond Round (9.16×9.16mm, White) and 1.8ct Diamond Round (7.91×7.91mm, 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.


2.8 Ct Diamond (Round) 1.8 Ct Diamond (Round)
9.16×9.16 mm vs 7.91×7.91 mm
65.9 mm²   49.14 mm²
Face-up size outline for 2.8ct Diamond (9.16×9.16mm, round cut)
Face-up size outline for 1.8ct Diamond (7.91×7.91mm, round cut)
2.8ct Diamond Round (9.16×9.16mm)
1.8ct Diamond Round (7.91×7.91mm)
Difference: 34% (16.76 mm²)
2.8ct Diamond (Round, 9.16×9.16mm) has approx. 34% more face-up area than 1.8ct Diamond (Round, 7.91×7.91mm).


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