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0.3ct Emerald (Pear, 6.34×3.82mm, Green) vs 4.5ct Diamond (Round, 10.73×10.73mm, White)


Quick summary: When looked from above (face-up position), 4.5ct Diamond (10.73×10.73mm, round cut) appears 5.1 times larger than 0.3ct Emerald (6.34×3.82mm, pear cut). See below how they compare side-by-side on a ring and finger.

0.3ct Emerald (pear cut)
vs
 4.5ct Diamond (round cut)
green
 
white
6.34×3.82 mm 10.73×10.73 mm
actual size
Actual size of 0.3ct Emerald (pear cut, 6.34×3.82mm, Green color)   Actual size of 4.5ct Diamond (round cut, 10.73×10.73mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Green 0.3ct Emerald (pear cut, 6.34×3.82mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 4.5ct Diamond (round cut, 10.73×10.73mm) 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
 23% vs 64%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 0.3ct Emerald Pear (6.34×3.82mm, Green) and 4.5ct Diamond Round (10.73×10.73mm, 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

All things being equal, Diamond will face-up smaller than Emerald for a given carat weight, because it has higher specific gravity (3.52 vs. 2.72 - this means it's "heavier" compared to Emerald of the same size). Face-up size also depends heavily on 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 Emerald (Pear) 4.5 Ct Diamond (Round)
6.34×3.82 mm vs 10.73×10.73 mm
17.68 mm²   90.43 mm²
Face-up size outline for 4.5ct Diamond (10.73×10.73mm, round cut)
Face-up size outline for 0.3ct Emerald (6.34×3.82mm, pear cut)
0.3ct Emerald Pear (6.34×3.82mm)
4.5ct Diamond Round (10.73×10.73mm)
Difference: 411% (72.75 mm²)
4.5ct Diamond (Round, 10.73×10.73mm) has approx. 411% more face-up area than 0.3ct Emerald (Pear, 6.34×3.82mm). In other words, it's 5.11x larger.


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