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3ct Cubic Zirconia (Cabochon, 8.79×5.86mm, White) vs 3ct Moissanite (Cabochon, 10.61×7.07mm, White)


Quick summary: When looked from above (face-up position), 3ct Moissanite (10.61×7.07mm, cabochon cut) appears 46% larger than 3ct Cubic Zirconia (8.79×5.86mm, cabochon cut). See below how they compare side-by-side on a ring and finger.

3ct Cubic Zirconia (cabochon cut)
vs
3ct Moissanite (cabochon cut)
white
 
white
8.79×5.86 mm 10.61×7.07 mm
actual size
Actual size of 3ct Cubic Zirconia (cabochon cut, 8.79×5.86mm, White color)   Actual size of 3ct Moissanite (cabochon cut, 10.61×7.07mm, White color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 3ct Cubic Zirconia (cabochon cut, 8.79×5.86mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 3ct Moissanite (cabochon cut, 10.61×7.07mm) 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
35% vs 42%
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Ring diameter: 16.9 mm
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Actual sizes of 3ct Cubic Zirconia Cabochon (8.79×5.86mm, White) and 3ct Moissanite Cabochon (10.61×7.07mm, 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.


3 Ct Cubic Zirconia (Cabochon) 3 Ct Moissanite (Cabochon)
8.79×5.86 mm vs 10.61×7.07 mm
42.24 mm²   61.51 mm²
Face-up size outline for 3ct Moissanite (10.61×7.07mm, cabochon cut)
Face-up size outline for 3ct Cubic Zirconia (8.79×5.86mm, cabochon cut)
3ct Cubic Zirconia Cabochon (8.79×5.86mm)
3ct Moissanite Cabochon (10.61×7.07mm)
Difference: 46% (19.27 mm²)
3ct Moissanite (Cabochon, 10.61×7.07mm) has approx. 46% more face-up area than 3ct Cubic Zirconia (Cabochon, 8.79×5.86mm).


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