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8.5ct Cubic Zirconia (Round, 11.01×11.01mm, White) vs 8.5ct Moissanite (Round, 13.69×13.69mm, White)


Quick summary: When looked from above (face-up position), 8.5ct Moissanite (13.69×13.69mm, round cut) appears 55% larger than 8.5ct Cubic Zirconia (11.01×11.01mm, round cut). See below how they compare side-by-side on a ring and finger.

8.5ct Cubic Zirconia (round cut)
vs
 8.5ct Moissanite (round cut)
white
 
white
11.01×11.01 mm 13.69×13.69 mm
actual size
Actual size of 8.5ct Cubic Zirconia (round cut, 11.01×11.01mm, White color)   Actual size of 8.5ct Moissanite (round cut, 13.69×13.69mm, White color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 8.5ct Cubic Zirconia (round cut, 11.01×11.01mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 8.5ct Moissanite (round cut, 13.69×13.69mm) 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
 66% vs 82%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 8.5ct Cubic Zirconia Round (11.01×11.01mm, White) and 8.5ct Moissanite Round (13.69×13.69mm, 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.


8.5 Ct Cubic Zirconia (Round) 8.5 Ct Moissanite (Round)
11.01×11.01 mm vs 13.69×13.69 mm
95.21 mm²   147.2 mm²
Face-up size outline for 8.5ct Moissanite (13.69×13.69mm, round cut)
Face-up size outline for 8.5ct Cubic Zirconia (11.01×11.01mm, round cut)
8.5ct Cubic Zirconia Round (11.01×11.01mm)
8.5ct Moissanite Round (13.69×13.69mm)
Difference: 55% (51.99 mm²)
8.5ct Moissanite (Round, 13.69×13.69mm) has approx. 55% more face-up area than 8.5ct Cubic Zirconia (Round, 11.01×11.01mm).


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