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13ct Moissanite (Cabochon, 17.3×11.53mm, White) vs 13ct Zircon (Cabochon, 15.26×10.17mm, Orange)


Quick summary: When looked from above (face-up position), 13ct Moissanite (17.3×11.53mm, cabochon cut) appears 29% larger than 13ct Zircon (15.26×10.17mm, cabochon cut). See below how they compare side-by-side on a ring and finger.

13ct Moissanite (cabochon cut)
vs
13ct Zircon (cabochon cut)
white
 
orange
17.3×11.53 mm 15.26×10.17 mm
actual size
Actual size of 13ct Moissanite (cabochon cut, 17.3×11.53mm, White color)   Actual size of 13ct Zircon (cabochon cut, 15.26×10.17mm, Orange color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 13ct Moissanite (cabochon cut, 17.3×11.53mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Orange 13ct Zircon (cabochon cut, 15.26×10.17mm) 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
69% vs 61%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 13ct Moissanite Cabochon (17.3×11.53mm, White) and 13ct Zircon Cabochon (15.26×10.17mm, 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.


13 Ct Moissanite (Cabochon) 13 Ct Zircon (Cabochon)
17.3×11.53 mm vs 15.26×10.17 mm
163.56 mm²   127.26 mm²
Face-up size outline for 13ct Moissanite (17.3×11.53mm, cabochon cut)
Face-up size outline for 13ct Zircon (15.26×10.17mm, cabochon cut)
13ct Moissanite Cabochon (17.3×11.53mm)
13ct Zircon Cabochon (15.26×10.17mm)
Difference: 29% (36.3 mm²)
13ct Moissanite (Cabochon, 17.3×11.53mm) has approx. 29% more face-up area than 13ct Zircon (Cabochon, 15.26×10.17mm).


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