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28ct Moissanite (Round, 20.37×20.37mm, White) vs 28ct Zircon (Round, 17.2×17.2mm, Orange)


Quick summary: When looked from above (face-up position), 28ct Moissanite (20.37×20.37mm, round cut) appears 40% larger than 28ct Zircon (17.2×17.2mm, round cut). See below how they compare side-by-side on a ring and finger.

28ct Moissanite (round cut)
vs
 28ct Zircon (round cut)
white
 
orange
20.37×20.37 mm 17.2×17.2 mm
actual size
Actual size of 28ct Moissanite (round cut, 20.37×20.37mm, White color)   Actual size of 28ct Zircon (round cut, 17.2×17.2mm, Orange color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 28ct Moissanite (round cut, 20.37×20.37mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Orange 28ct Zircon (round cut, 17.2×17.2mm) 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
 121% vs 102%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 28ct Moissanite Round (20.37×20.37mm, White) and 28ct Zircon Round (17.2×17.2mm, 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.


28 Ct Moissanite (Round) 28 Ct Zircon (Round)
20.37×20.37 mm vs 17.2×17.2 mm
325.89 mm²   232.35 mm²
Face-up size outline for 28ct Moissanite (20.37×20.37mm, round cut)
Face-up size outline for 28ct Zircon (17.2×17.2mm, round cut)
28ct Moissanite Round (20.37×20.37mm)
28ct Zircon Round (17.2×17.2mm)
Difference: 40% (93.54 mm²)
28ct Moissanite (Round, 20.37×20.37mm) has approx. 40% more face-up area than 28ct Zircon (Round, 17.2×17.2mm).


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