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3.5ct Diamond (Heart, 9.96×9.96mm, White) vs 3.5ct Cubic Zirconia (Heart, 8.47×8.47mm, White)


Quick summary: When looked from above (face-up position), 3.5ct Diamond (9.96×9.96mm, heart cut) appears 38% larger than 3.5ct Cubic Zirconia (8.47×8.47mm, heart cut). See below how they compare side-by-side on a ring and finger.

3.5ct Diamond (heart cut)
vs
3.5ct Cubic Zirconia (heart cut)
white
 
white
9.96×9.96 mm 8.47×8.47 mm
actual size
Actual size of 3.5ct Diamond (heart cut, 9.96×9.96mm, White color)   Actual size of 3.5ct Cubic Zirconia (heart cut, 8.47×8.47mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 3.5ct Diamond (heart cut, 9.96×9.96mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 3.5ct Cubic Zirconia (heart cut, 8.47×8.47mm) 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
59% vs 51%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 3.5ct Diamond Heart (9.96×9.96mm, White) and 3.5ct Cubic Zirconia Heart (8.47×8.47mm, 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.


3.5 Ct Diamond (Heart) 3.5 Ct Cubic Zirconia (Heart)
9.96×9.96 mm vs 8.47×8.47 mm
71.43 mm²   51.65 mm²
Face-up size outline for 3.5ct Diamond (9.96×9.96mm, heart cut)
Face-up size outline for 3.5ct Cubic Zirconia (8.47×8.47mm, heart cut)
3.5ct Diamond Heart (9.96×9.96mm)
3.5ct Cubic Zirconia Heart (8.47×8.47mm)
Difference: 38% (19.78 mm²)
3.5ct Diamond (Heart, 9.96×9.96mm) has approx. 38% more face-up area than 3.5ct Cubic Zirconia (Heart, 8.47×8.47mm).


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