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8.5ct Diamond (Oval, 16.56×11.04mm, White) vs 8.5ct Cubic Zirconia (Oval, 13.95×9.3mm, White)


Quick summary: When looked from above (face-up position), 8.5ct Diamond (16.56×11.04mm, oval cut) appears 41% larger than 8.5ct Cubic Zirconia (13.95×9.3mm, oval cut). See below how they compare side-by-side on a ring and finger.

8.5ct Diamond (oval cut)
vs
8.5ct Cubic Zirconia (oval cut)
white
 
white
16.56×11.04 mm 13.95×9.3 mm
actual size
Actual size of 8.5ct Diamond (oval cut, 16.56×11.04mm, White color)   Actual size of 8.5ct Cubic Zirconia (oval cut, 13.95×9.3mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 8.5ct Diamond (oval cut, 16.56×11.04mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 8.5ct Cubic Zirconia (oval cut, 13.95×9.3mm) 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
66% vs 56%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 8.5ct Diamond Oval (16.56×11.04mm, White) and 8.5ct Cubic Zirconia Oval (13.95×9.3mm, 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.


8.5 Ct Diamond (Oval) 8.5 Ct Cubic Zirconia (Oval)
16.56×11.04 mm vs 13.95×9.3 mm
149.91 mm²   106.38 mm²
Face-up size outline for 8.5ct Diamond (16.56×11.04mm, oval cut)
Face-up size outline for 8.5ct Cubic Zirconia (13.95×9.3mm, oval cut)
8.5ct Diamond Oval (16.56×11.04mm)
8.5ct Cubic Zirconia Oval (13.95×9.3mm)
Difference: 41% (43.53 mm²)
8.5ct Diamond (Oval, 16.56×11.04mm) has approx. 41% more face-up area than 8.5ct Cubic Zirconia (Oval, 13.95×9.3mm).


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