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0.75ct Diamond (Radiant, 5.25×5.25mm, White) vs 0.75ct Moissanite (Radiant, 5.38×5.38mm, White)


Quick summary: When looked from above (face-up position), 0.75ct Moissanite (5.38×5.38mm, radiant cut) appears 5% larger than 0.75ct Diamond (5.25×5.25mm, radiant cut). See below how they compare side-by-side on a ring and finger.

0.75ct Diamond (radiant cut)
vs
 0.75ct Moissanite (radiant cut)
white
 
white
5.25×5.25 mm 5.38×5.38 mm
actual size
Actual size of 0.75ct Diamond (radiant cut, 5.25×5.25mm, White color)   Actual size of 0.75ct Moissanite (radiant cut, 5.38×5.38mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 0.75ct Diamond (radiant cut, 5.25×5.25mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 0.75ct Moissanite (radiant cut, 5.38×5.38mm) 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
 32% vs 32%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 0.75ct Diamond Radiant (5.25×5.25mm, White) and 0.75ct Moissanite Radiant (5.38×5.38mm, 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 Moissanite for a given carat weight, because it has higher specific gravity (3.52 vs. 3.22 - this means it's "heavier" compared to Moissanite 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.


0.75 Ct Diamond (Radiant) 0.75 Ct Moissanite (Radiant)
5.25×5.25 mm vs 5.38×5.38 mm
26.18 mm²   27.5 mm²
Face-up size outline for 0.75ct Moissanite (5.38×5.38mm, radiant cut)
Face-up size outline for 0.75ct Diamond (5.25×5.25mm, radiant cut)
0.75ct Diamond Radiant (5.25×5.25mm)
0.75ct Moissanite Radiant (5.38×5.38mm)
Difference: 5% (1.32 mm²)
0.75ct Moissanite (Radiant, 5.38×5.38mm) has approx. 5% more face-up area than 0.75ct Diamond (Radiant, 5.25×5.25mm).


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