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0.25ct Diamond (Oval, 5.12×3.41mm, White) vs 0.25ct Moissanite (Oval, 5.19×3.46mm, White)


Quick summary: When looked from above (face-up position), 0.25ct Moissanite (5.19×3.46mm, oval cut) appears 3% larger than 0.25ct Diamond (5.12×3.41mm, oval cut). See below how they compare side-by-side on a ring and finger.

0.25ct Diamond (oval cut)
vs
0.25ct Moissanite (oval cut)
white
 
white
5.12×3.41 mm 5.19×3.46 mm
actual size
Actual size of 0.25ct Diamond (oval cut, 5.12×3.41mm, White color)   Actual size of 0.25ct Moissanite (oval cut, 5.19×3.46mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 0.25ct Diamond (oval cut, 5.12×3.41mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 0.25ct Moissanite (oval cut, 5.19×3.46mm) 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
21% vs 21%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 0.25ct Diamond Oval (5.12×3.41mm, White) and 0.25ct Moissanite Oval (5.19×3.46mm, 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.


0.25 Ct Diamond (Oval) 0.25 Ct Moissanite (Oval)
5.12×3.41 mm vs 5.19×3.46 mm
14.32 mm²   14.73 mm²
Face-up size outline for 0.25ct Moissanite (5.19×3.46mm, oval cut)
Face-up size outline for 0.25ct Diamond (5.12×3.41mm, oval cut)
0.25ct Diamond Oval (5.12×3.41mm)
0.25ct Moissanite Oval (5.19×3.46mm)
Difference: 3% (0.41 mm²)
0.25ct Moissanite (Oval, 5.19×3.46mm) has approx. 3% more face-up area than 0.25ct Diamond (Oval, 5.12×3.41mm).


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