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10ct Diamond (Round, 14×14mm, White) vs 30ct Diamond (Round, 20.2×20.2mm, White)


Quick summary: When looked from above (face-up position), 30ct Diamond (20.2×20.2mm, round cut) appears 2.1 times larger than 10ct Diamond (14×14mm, round cut). See below how they compare side-by-side on a ring and finger.

10ct Diamond (round cut)
vs
 30ct Diamond (round cut)
white
 
white
14×14 mm 20.2×20.2 mm
actual size
Actual size of 10ct Diamond (round cut, 14×14mm, White color)   Actual size of 30ct Diamond (round cut, 20.2×20.2mm, White color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 10ct Diamond (round cut, 14×14mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 30ct Diamond (round cut, 20.2×20.2mm) 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
 83% vs 120%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 10ct Diamond Round (14×14mm, White) and 30ct Diamond Round (20.2×20.2mm, 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.


10 Ct Diamond (Round) 30 Ct Diamond (Round)
14×14 mm vs 20.2×20.2 mm
153.94 mm²   320.47 mm²
Face-up size outline for 30ct Diamond (20.2×20.2mm, round cut)
Face-up size outline for 10ct Diamond (14×14mm, round cut)
10ct Diamond Round (14×14mm)
30ct Diamond Round (20.2×20.2mm)
Difference: 108% (166.53 mm²)
30ct Diamond (Round, 20.2×20.2mm) has approx. 108% more face-up area than 10ct Diamond (Round, 14×14mm). In other words, it's 2.08x larger.


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