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8.5ct Diamond (Asscher, 11.46×11.46mm, White) vs 8.5ct Cubic Zirconia (Asscher, 9.7×9.7mm, White)


Quick summary: When looked from above (face-up position), 8.5ct Diamond (11.46×11.46mm, asscher cut) appears 40% larger than 8.5ct Cubic Zirconia (9.7×9.7mm, asscher cut). See below how they compare side-by-side on a ring and finger.

8.5ct Diamond (asscher cut)
vs
 8.5ct Cubic Zirconia (asscher cut)
white
 
white
11.46×11.46 mm 9.7×9.7 mm
actual size
Actual size of 8.5ct Diamond (asscher cut, 11.46×11.46mm, White color)   Actual size of 8.5ct Cubic Zirconia (asscher cut, 9.7×9.7mm, 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 (asscher cut, 11.46×11.46mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 8.5ct Cubic Zirconia (asscher cut, 9.7×9.7mm) 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
 68% vs 58%
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Ring diameter: 16.9 mm
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Actual sizes of 8.5ct Diamond Asscher (11.46×11.46mm, White) and 8.5ct Cubic Zirconia Asscher (9.7×9.7mm, 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 (Asscher) 8.5 Ct Cubic Zirconia (Asscher)
11.46×11.46 mm vs 9.7×9.7 mm
120.83 mm²   86.56 mm²
Face-up size outline for 8.5ct Diamond (11.46×11.46mm, asscher cut)
Face-up size outline for 8.5ct Cubic Zirconia (9.7×9.7mm, asscher cut)
8.5ct Diamond Asscher (11.46×11.46mm)
8.5ct Cubic Zirconia Asscher (9.7×9.7mm)
Difference: 40% (34.27 mm²)
8.5ct Diamond (Asscher, 11.46×11.46mm) has approx. 40% more face-up area than 8.5ct Cubic Zirconia (Asscher, 9.7×9.7mm).


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