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15ct Diaspore (Round, 15.56×15.56mm, Light Yellowish Green) vs 15ct Diamond (Round, 16.03×16.03mm, White)


Quick summary: When looked from above (face-up position), 15ct Diamond (16.03×16.03mm, round cut) appears 6% larger than 15ct Diaspore (15.56×15.56mm, round cut). See below how they compare side-by-side on a ring and finger.

15ct Diaspore (round cut)
vs
 15ct Diamond (round cut)
light yellowish green
 
white
15.56×15.56 mm 16.03×16.03 mm
actual size
Actual size of 15ct Diaspore (round cut, 15.56×15.56mm, Light Yellowish Green color)   Actual size of 15ct Diamond (round cut, 16.03×16.03mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Light Yellowish Green 15ct Diaspore (round cut, 15.56×15.56mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 15ct Diamond (round cut, 16.03×16.03mm) 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
 93% vs 95%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 15ct Diaspore Round (15.56×15.56mm, Light Yellowish Green) and 15ct Diamond Round (16.03×16.03mm, 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 Diaspore for a given carat weight, because it has higher specific gravity (3.52 vs. 3.4 - this means it's "heavier" compared to Diaspore 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.


15 Ct Diaspore (Round) 15 Ct Diamond (Round)
15.56×15.56 mm vs 16.03×16.03 mm
190.16 mm²   201.82 mm²
Face-up size outline for 15ct Diamond (16.03×16.03mm, round cut)
Face-up size outline for 15ct Diaspore (15.56×15.56mm, round cut)
15ct Diaspore Round (15.56×15.56mm)
15ct Diamond Round (16.03×16.03mm)
Difference: 6% (11.66 mm²)
15ct Diamond (Round, 16.03×16.03mm) has approx. 6% more face-up area than 15ct Diaspore (Round, 15.56×15.56mm).


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