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30ct Diamond (Trillion, 24.04×24.04mm, White) vs 30ct Emerald (Trillion, 25.83×25.83mm, Green)


Quick summary: When looked from above (face-up position), 30ct Emerald (25.83×25.83mm, trillion cut) appears 15% larger than 30ct Diamond (24.04×24.04mm, trillion cut). See below how they compare side-by-side on a ring and finger.

30ct Diamond (trillion cut)
vs
 30ct Emerald (trillion cut)
white
 
green
24.04×24.04 mm 25.83×25.83 mm
actual size
Actual size of 30ct Diamond (trillion cut, 24.04×24.04mm, White color)   Actual size of 30ct Emerald (trillion cut, 25.83×25.83mm, Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 30ct Diamond (trillion cut, 24.04×24.04mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Green 30ct Emerald (trillion cut, 25.83×25.83mm) 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
 143% vs 153%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 30ct Diamond Trillion (24.04×24.04mm, White) and 30ct Emerald Trillion (25.83×25.83mm, Green) 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.


30 Ct Diamond (Trillion) 30 Ct Emerald (Trillion)
24.04×24.04 mm vs 25.83×25.83 mm
358.31 mm²   413.66 mm²
Face-up size outline for 30ct Emerald (25.83×25.83mm, trillion cut)
Face-up size outline for 30ct Diamond (24.04×24.04mm, trillion cut)
30ct Diamond Trillion (24.04×24.04mm)
30ct Emerald Trillion (25.83×25.83mm)
Difference: 15% (55.35 mm²)
30ct Emerald (Trillion, 25.83×25.83mm) has approx. 15% more face-up area than 30ct Diamond (Trillion, 24.04×24.04mm).


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