×
carat vs. color  length*  width*
  ×

(or examine a )
* size in mm (optional)

3.5ct Diamond (Trillion, 11.75×11.75mm, White) vs 3.5ct Cubic Zirconia (Trillion, 9.89×9.89mm, White)


Quick summary: When looked from above (face-up position), 3.5ct Diamond (11.75×11.75mm, trillion cut) appears 41% larger than 3.5ct Cubic Zirconia (9.89×9.89mm, trillion cut). See below how they compare side-by-side on a ring and finger.

3.5ct Diamond (trillion cut)
vs
 3.5ct Cubic Zirconia (trillion cut)
white
 
white
11.75×11.75 mm 9.89×9.89 mm
actual size
Actual size of 3.5ct Diamond (trillion cut, 11.75×11.75mm, White color)   Actual size of 3.5ct Cubic Zirconia (trillion cut, 9.89×9.89mm, 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 (trillion cut, 11.75×11.75mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 3.5ct Cubic Zirconia (trillion cut, 9.89×9.89mm) 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
 70% vs 59%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 3.5ct Diamond Trillion (11.75×11.75mm, White) and 3.5ct Cubic Zirconia Trillion (9.89×9.89mm, 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 (Trillion) 3.5 Ct Cubic Zirconia (Trillion)
11.75×11.75 mm vs 9.89×9.89 mm
85.6 mm²   60.64 mm²
Face-up size outline for 3.5ct Diamond (11.75×11.75mm, trillion cut)
Face-up size outline for 3.5ct Cubic Zirconia (9.89×9.89mm, trillion cut)
3.5ct Diamond Trillion (11.75×11.75mm)
3.5ct Cubic Zirconia Trillion (9.89×9.89mm)
Difference: 41% (24.96 mm²)
3.5ct Diamond (Trillion, 11.75×11.75mm) has approx. 41% more face-up area than 3.5ct Cubic Zirconia (Trillion, 9.89×9.89mm).


Popular comparisons: