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1.25ct Cubic Zirconia (Marquise, 9.34×4.67mm, White) vs 1.25ct Diamond (Marquise, 11.18×5.59mm, White)


Quick summary: When looked from above (face-up position), 1.25ct Diamond (11.18×5.59mm, marquise cut) appears 43% larger than 1.25ct Cubic Zirconia (9.34×4.67mm, marquise cut). See below how they compare side-by-side on a ring and finger.

1.25ct Cubic Zirconia (marquise cut)
vs
1.25ct Diamond (marquise cut)
white
 
white
9.34×4.67 mm 11.18×5.59 mm
actual size
Actual size of 1.25ct Cubic Zirconia (marquise cut, 9.34×4.67mm, White color)   Actual size of 1.25ct Diamond (marquise cut, 11.18×5.59mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 1.25ct Cubic Zirconia (marquise cut, 9.34×4.67mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 1.25ct Diamond (marquise cut, 11.18×5.59mm) 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
28% vs 34%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 1.25ct Cubic Zirconia Marquise (9.34×4.67mm, White) and 1.25ct Diamond Marquise (11.18×5.59mm, 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 Diamond for a given carat weight, because it has higher specific gravity (5.65 vs. 3.52 - this means it's "heavier" compared to Diamond 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.


1.25 Ct Cubic Zirconia (Marquise) 1.25 Ct Diamond (Marquise)
9.34×4.67 mm vs 11.18×5.59 mm
30.97 mm²   44.37 mm²
Face-up size outline for 1.25ct Diamond (11.18×5.59mm, marquise cut)
Face-up size outline for 1.25ct Cubic Zirconia (9.34×4.67mm, marquise cut)
1.25ct Cubic Zirconia Marquise (9.34×4.67mm)
1.25ct Diamond Marquise (11.18×5.59mm)
Difference: 43% (13.4 mm²)
1.25ct Diamond (Marquise, 11.18×5.59mm) has approx. 43% more face-up area than 1.25ct Cubic Zirconia (Marquise, 9.34×4.67mm).


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