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6ct Cubic Zirconia (Radiant, 8.92×8.92mm, White) vs 6ct Moissanite (Radiant, 10.76×10.76mm, White)


Quick summary: When looked from above (face-up position), 6ct Moissanite (10.76×10.76mm, radiant cut) appears 46% larger than 6ct Cubic Zirconia (8.92×8.92mm, radiant cut). See below how they compare side-by-side on a ring and finger.

6ct Cubic Zirconia (radiant cut)
vs
6ct Moissanite (radiant cut)
white
 
white
8.92×8.92 mm 10.76×10.76 mm
actual size
Actual size of 6ct Cubic Zirconia (radiant cut, 8.92×8.92mm, White color)   Actual size of 6ct Moissanite (radiant cut, 10.76×10.76mm, White color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 6ct Cubic Zirconia (radiant cut, 8.92×8.92mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 6ct Moissanite (radiant cut, 10.76×10.76mm) 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
53% vs 64%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 6ct Cubic Zirconia Radiant (8.92×8.92mm, White) and 6ct Moissanite Radiant (10.76×10.76mm, 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, Cubic Zirconia will face-up smaller than Moissanite for a given carat weight, because it has higher specific gravity (5.65 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.


6 Ct Cubic Zirconia (Radiant) 6 Ct Moissanite (Radiant)
8.92×8.92 mm vs 10.76×10.76 mm
75.59 mm²   109.99 mm²
Face-up size outline for 6ct Moissanite (10.76×10.76mm, radiant cut)
Face-up size outline for 6ct Cubic Zirconia (8.92×8.92mm, radiant cut)
6ct Cubic Zirconia Radiant (8.92×8.92mm)
6ct Moissanite Radiant (10.76×10.76mm)
Difference: 46% (34.4 mm²)
6ct Moissanite (Radiant, 10.76×10.76mm) has approx. 46% more face-up area than 6ct Cubic Zirconia (Radiant, 8.92×8.92mm).


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