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8ct Diamond (Trillion, 15.47×15.47mm, White) vs 8ct Cubic Zirconia (Trillion, 13.03×13.03mm, White)


Quick summary: When looked from above (face-up position), 8ct Diamond (15.47×15.47mm, trillion cut) appears 41% larger than 8ct Cubic Zirconia (13.03×13.03mm, trillion cut). See below how they compare side-by-side on a ring and finger.

8ct Diamond (trillion cut)
vs
 8ct Cubic Zirconia (trillion cut)
white
 
white
15.47×15.47 mm 13.03×13.03 mm
actual size
Actual size of 8ct Diamond (trillion cut, 15.47×15.47mm, White color)   Actual size of 8ct Cubic Zirconia (trillion cut, 13.03×13.03mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 8ct Diamond (trillion cut, 15.47×15.47mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 8ct Cubic Zirconia (trillion cut, 13.03×13.03mm) 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
 92% vs 78%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 8ct Diamond Trillion (15.47×15.47mm, White) and 8ct Cubic Zirconia Trillion (13.03×13.03mm, 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 Ct Diamond (Trillion) 8 Ct Cubic Zirconia (Trillion)
15.47×15.47 mm vs 13.03×13.03 mm
148.38 mm²   105.26 mm²
Face-up size outline for 8ct Diamond (15.47×15.47mm, trillion cut)
Face-up size outline for 8ct Cubic Zirconia (13.03×13.03mm, trillion cut)
8ct Diamond Trillion (15.47×15.47mm)
8ct Cubic Zirconia Trillion (13.03×13.03mm)
Difference: 41% (43.12 mm²)
8ct Diamond (Trillion, 15.47×15.47mm) has approx. 41% more face-up area than 8ct Cubic Zirconia (Trillion, 13.03×13.03mm).


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