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7.5ct Diamond (Cabochon, 13.98×9.32mm, White) vs 7.5ct Cubic Zirconia (Cabochon, 11.94×7.96mm, White)


Quick summary: When looked from above (face-up position), 7.5ct Diamond (13.98×9.32mm, cabochon cut) appears 37% larger than 7.5ct Cubic Zirconia (11.94×7.96mm, cabochon cut). See below how they compare side-by-side on a ring and finger.

7.5ct Diamond (cabochon cut)
vs
7.5ct Cubic Zirconia (cabochon cut)
white
 
white
13.98×9.32 mm 11.94×7.96 mm
actual size
Actual size of 7.5ct Diamond (cabochon cut, 13.98×9.32mm, White color)   Actual size of 7.5ct Cubic Zirconia (cabochon cut, 11.94×7.96mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 7.5ct Diamond (cabochon cut, 13.98×9.32mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 7.5ct Cubic Zirconia (cabochon cut, 11.94×7.96mm) 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
56% vs 48%
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Ring diameter: 16.9 mm
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Actual sizes of 7.5ct Diamond Cabochon (13.98×9.32mm, White) and 7.5ct Cubic Zirconia Cabochon (11.94×7.96mm, 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.


7.5 Ct Diamond (Cabochon) 7.5 Ct Cubic Zirconia (Cabochon)
13.98×9.32 mm vs 11.94×7.96 mm
106.84 mm²   77.93 mm²
Face-up size outline for 7.5ct Diamond (13.98×9.32mm, cabochon cut)
Face-up size outline for 7.5ct Cubic Zirconia (11.94×7.96mm, cabochon cut)
7.5ct Diamond Cabochon (13.98×9.32mm)
7.5ct Cubic Zirconia Cabochon (11.94×7.96mm)
Difference: 37% (28.91 mm²)
7.5ct Diamond (Cabochon, 13.98×9.32mm) has approx. 37% more face-up area than 7.5ct Cubic Zirconia (Cabochon, 11.94×7.96mm).


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