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0.5ct Diamond (Cabochon, 5.67×3.78mm, White) vs 0.5ct Moissanite (Cabochon, 5.84×3.89mm, White)


Quick summary: When looked from above (face-up position), 0.5ct Moissanite (5.84×3.89mm, cabochon cut) appears 6% larger than 0.5ct Diamond (5.67×3.78mm, cabochon cut). See below how they compare side-by-side on a ring and finger.

0.5ct Diamond (cabochon cut)
vs
0.5ct Moissanite (cabochon cut)
white
 
white
5.67×3.78 mm 5.84×3.89 mm
actual size
Actual size of 0.5ct Diamond (cabochon cut, 5.67×3.78mm, White color)   Actual size of 0.5ct Moissanite (cabochon cut, 5.84×3.89mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 0.5ct Diamond (cabochon cut, 5.67×3.78mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 0.5ct Moissanite (cabochon cut, 5.84×3.89mm) 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
23% vs 24%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 0.5ct Diamond Cabochon (5.67×3.78mm, White) and 0.5ct Moissanite Cabochon (5.84×3.89mm, 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.


0.5 Ct Diamond (Cabochon) 0.5 Ct Moissanite (Cabochon)
5.67×3.78 mm vs 5.84×3.89 mm
17.57 mm²   18.63 mm²
Face-up size outline for 0.5ct Moissanite (5.84×3.89mm, cabochon cut)
Face-up size outline for 0.5ct Diamond (5.67×3.78mm, cabochon cut)
0.5ct Diamond Cabochon (5.67×3.78mm)
0.5ct Moissanite Cabochon (5.84×3.89mm)
Difference: 6% (1.06 mm²)
0.5ct Moissanite (Cabochon, 5.84×3.89mm) has approx. 6% more face-up area than 0.5ct Diamond (Cabochon, 5.67×3.78mm).


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