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12ct Diamond (Asscher, 12.85×12.85mm, White) vs 12ct Emerald (Asscher, 13.88×13.88mm, Green)


Quick summary: When looked from above (face-up position), 12ct Emerald (13.88×13.88mm, asscher cut) appears 17% larger than 12ct Diamond (12.85×12.85mm, asscher cut). See below how they compare side-by-side on a ring and finger.

12ct Diamond (asscher cut)
vs
 12ct Emerald (asscher cut)
white
 
green
12.85×12.85 mm 13.88×13.88 mm
actual size
Actual size of 12ct Diamond (asscher cut, 12.85×12.85mm, White color)   Actual size of 12ct Emerald (asscher cut, 13.88×13.88mm, Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 12ct Diamond (asscher cut, 12.85×12.85mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Green 12ct Emerald (asscher cut, 13.88×13.88mm) 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
 77% vs 83%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 12ct Diamond Asscher (12.85×12.85mm, White) and 12ct Emerald Asscher (13.88×13.88mm, 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.


12 Ct Diamond (Asscher) 12 Ct Emerald (Asscher)
12.85×12.85 mm vs 13.88×13.88 mm
151.91 mm²   177.24 mm²
Face-up size outline for 12ct Emerald (13.88×13.88mm, asscher cut)
Face-up size outline for 12ct Diamond (12.85×12.85mm, asscher cut)
12ct Diamond Asscher (12.85×12.85mm)
12ct Emerald Asscher (13.88×13.88mm)
Difference: 17% (25.33 mm²)
12ct Emerald (Asscher, 13.88×13.88mm) has approx. 17% more face-up area than 12ct Diamond (Asscher, 12.85×12.85mm).


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