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3ct Diamond (Asscher, 8.1×8.1mm, White) vs 3ct Cubic Zirconia (Asscher, 6.85×6.85mm, White)


Quick summary: When looked from above (face-up position), 3ct Diamond (8.1×8.1mm, asscher cut) appears 40% larger than 3ct Cubic Zirconia (6.85×6.85mm, asscher cut). See below how they compare side-by-side on a ring and finger.

3ct Diamond (asscher cut)
vs
3ct Cubic Zirconia (asscher cut)
white
 
white
8.1×8.1 mm 6.85×6.85 mm
actual size
Actual size of 3ct Diamond (asscher cut, 8.1×8.1mm, White color)   Actual size of 3ct Cubic Zirconia (asscher cut, 6.85×6.85mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 3ct Diamond (asscher cut, 8.1×8.1mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 3ct Cubic Zirconia (asscher cut, 6.85×6.85mm) 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
48% vs 41%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 3ct Diamond Asscher (8.1×8.1mm, White) and 3ct Cubic Zirconia Asscher (6.85×6.85mm, 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 Ct Diamond (Asscher) 3 Ct Cubic Zirconia (Asscher)
8.1×8.1 mm vs 6.85×6.85 mm
60.36 mm²   43.17 mm²
Face-up size outline for 3ct Diamond (8.1×8.1mm, asscher cut)
Face-up size outline for 3ct Cubic Zirconia (6.85×6.85mm, asscher cut)
3ct Diamond Asscher (8.1×8.1mm)
3ct Cubic Zirconia Asscher (6.85×6.85mm)
Difference: 40% (17.19 mm²)
3ct Diamond (Asscher, 8.1×8.1mm) has approx. 40% more face-up area than 3ct Cubic Zirconia (Asscher, 6.85×6.85mm).


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