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12ct Moissanite (Oval, 18.87×12.58mm, White) vs 12ct Zircon (Oval, 16.64×11.09mm, Orange)


Quick summary: When looked from above (face-up position), 12ct Moissanite (18.87×12.58mm, oval cut) appears 29% larger than 12ct Zircon (16.64×11.09mm, oval cut). See below how they compare side-by-side on a ring and finger.

12ct Moissanite (oval cut)
vs
 12ct Zircon (oval cut)
white
 
orange
18.87×12.58 mm 16.64×11.09 mm
actual size
Actual size of 12ct Moissanite (oval cut, 18.87×12.58mm, White color)   Actual size of 12ct Zircon (oval cut, 16.64×11.09mm, Orange color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 12ct Moissanite (oval cut, 18.87×12.58mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Orange 12ct Zircon (oval cut, 16.64×11.09mm) 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
 75% vs 66%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 12ct Moissanite Oval (18.87×12.58mm, White) and 12ct Zircon Oval (16.64×11.09mm, Orange) 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, Zircon will face-up smaller than Moissanite for a given carat weight, because it has higher specific gravity (4.7 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 Moissanite (Oval) 12 Ct Zircon (Oval)
18.87×12.58 mm vs 16.64×11.09 mm
194.66 mm²   151.32 mm²
Face-up size outline for 12ct Moissanite (18.87×12.58mm, oval cut)
Face-up size outline for 12ct Zircon (16.64×11.09mm, oval cut)
12ct Moissanite Oval (18.87×12.58mm)
12ct Zircon Oval (16.64×11.09mm)
Difference: 29% (43.34 mm²)
12ct Moissanite (Oval, 18.87×12.58mm) has approx. 29% more face-up area than 12ct Zircon (Oval, 16.64×11.09mm).


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