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1.21ct Diamond (Round, 6.93×6.93mm, White) vs 4ct Diamond (Round, 10.32×10.32mm, White)


Quick summary: When looked from above (face-up position), 4ct Diamond (10.32×10.32mm, round cut) appears 2.2 times larger than 1.21ct Diamond (6.93×6.93mm, round cut). See below how they compare side-by-side on a ring and finger.

1.21ct Diamond (round cut)
vs
 4ct Diamond (round cut)
white
 
white
6.93×6.93 mm 10.32×10.32 mm
actual size
Actual size of 1.21ct Diamond (round cut, 6.93×6.93mm, White color)   Actual size of 4ct Diamond (round cut, 10.32×10.32mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 1.21ct Diamond (round cut, 6.93×6.93mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 4ct Diamond (round cut, 10.32×10.32mm) 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
 42% vs 62%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 1.21ct Diamond Round (6.93×6.93mm, White) and 4ct Diamond Round (10.32×10.32mm, 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.


1.21 Ct Diamond (Round) 4 Ct Diamond (Round)
6.93×6.93 mm vs 10.32×10.32 mm
37.72 mm²   83.65 mm²
Face-up size outline for 4ct Diamond (10.32×10.32mm, round cut)
Face-up size outline for 1.21ct Diamond (6.93×6.93mm, round cut)
1.21ct Diamond Round (6.93×6.93mm)
4ct Diamond Round (10.32×10.32mm)
Difference: 122% (45.93 mm²)
4ct Diamond (Round, 10.32×10.32mm) has approx. 122% more face-up area than 1.21ct Diamond (Round, 6.93×6.93mm). In other words, it's 2.22x larger.


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