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4ct Diamond (Pear, 14.36×8.65mm, White) vs 4ct Cubic Zirconia (Pear, 12.04×7.25mm, White)


Quick summary: When looked from above (face-up position), 4ct Diamond (14.36×8.65mm, pear cut) appears 42% larger than 4ct Cubic Zirconia (12.04×7.25mm, pear cut). See below how they compare side-by-side on a ring and finger.

4ct Diamond (pear cut)
vs
 4ct Cubic Zirconia (pear cut)
white
 
white
14.36×8.65 mm 12.04×7.25 mm
actual size
Actual size of 4ct Diamond (pear cut, 14.36×8.65mm, White color)   Actual size of 4ct Cubic Zirconia (pear cut, 12.04×7.25mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 4ct Diamond (pear cut, 14.36×8.65mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 4ct Cubic Zirconia (pear cut, 12.04×7.25mm) 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
 52% vs 43%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 4ct Diamond Pear (14.36×8.65mm, White) and 4ct Cubic Zirconia Pear (12.04×7.25mm, 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.


4 Ct Diamond (Pear) 4 Ct Cubic Zirconia (Pear)
14.36×8.65 mm vs 12.04×7.25 mm
90.68 mm²   63.72 mm²
Face-up size outline for 4ct Diamond (14.36×8.65mm, pear cut)
Face-up size outline for 4ct Cubic Zirconia (12.04×7.25mm, pear cut)
4ct Diamond Pear (14.36×8.65mm)
4ct Cubic Zirconia Pear (12.04×7.25mm)
Difference: 42% (26.96 mm²)
4ct Diamond (Pear, 14.36×8.65mm) has approx. 42% more face-up area than 4ct Cubic Zirconia (Pear, 12.04×7.25mm).


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