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12ct Cubic Zirconia (Oval, 15.65×10.43mm, White) vs 12ct Moissanite (Oval, 18.87×12.58mm, White)


Quick summary: When looked from above (face-up position), 12ct Moissanite (18.87×12.58mm, oval cut) appears 45% larger than 12ct Cubic Zirconia (15.65×10.43mm, oval cut). See below how they compare side-by-side on a ring and finger.

12ct Cubic Zirconia (oval cut)
vs
 12ct Moissanite (oval cut)
white
 
white
15.65×10.43 mm 18.87×12.58 mm
actual size
Actual size of 12ct Cubic Zirconia (oval cut, 15.65×10.43mm, White color)   Actual size of 12ct Moissanite (oval cut, 18.87×12.58mm, White color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 12ct Cubic Zirconia (oval cut, 15.65×10.43mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 12ct Moissanite (oval cut, 18.87×12.58mm) 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
 62% vs 75%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 12ct Cubic Zirconia Oval (15.65×10.43mm, White) and 12ct Moissanite Oval (18.87×12.58mm, 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.


12 Ct Cubic Zirconia (Oval) 12 Ct Moissanite (Oval)
15.65×10.43 mm vs 18.87×12.58 mm
133.85 mm²   194.66 mm²
Face-up size outline for 12ct Moissanite (18.87×12.58mm, oval cut)
Face-up size outline for 12ct Cubic Zirconia (15.65×10.43mm, oval cut)
12ct Cubic Zirconia Oval (15.65×10.43mm)
12ct Moissanite Oval (18.87×12.58mm)
Difference: 45% (60.81 mm²)
12ct Moissanite (Oval, 18.87×12.58mm) has approx. 45% more face-up area than 12ct Cubic Zirconia (Oval, 15.65×10.43mm).


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