×
carat vs. color  length*  width*
  ×

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

1.5ct Zircon (Princess, 5.85×5.85mm, White) vs 1.5ct Diamond (Princess, 6.31×6.31mm, White)


Quick summary: When looked from above (face-up position), 1.5ct Diamond (6.31×6.31mm, princess cut) appears 16% larger than 1.5ct Zircon (5.85×5.85mm, princess cut). See below how they compare side-by-side on a ring and finger.

1.5ct Zircon (princess cut)
vs
 1.5ct Diamond (princess cut)
white
 
white
5.85×5.85 mm 6.31×6.31 mm
actual size
Actual size of 1.5ct Zircon (princess cut, 5.85×5.85mm, White color)   Actual size of 1.5ct Diamond (princess cut, 6.31×6.31mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 1.5ct Zircon (princess cut, 5.85×5.85mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 1.5ct Diamond (princess cut, 6.31×6.31mm) 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
 35% vs 38%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 1.5ct Zircon Princess (5.85×5.85mm, White) and 1.5ct Diamond Princess (6.31×6.31mm, 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, Zircon will face-up smaller than Diamond for a given carat weight, because it has higher specific gravity (4.7 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.


1.5 Ct Zircon (Princess) 1.5 Ct Diamond (Princess)
5.85×5.85 mm vs 6.31×6.31 mm
34.22 mm²   39.82 mm²
Face-up size outline for 1.5ct Diamond (6.31×6.31mm, princess cut)
Face-up size outline for 1.5ct Zircon (5.85×5.85mm, princess cut)
1.5ct Zircon Princess (5.85×5.85mm)
1.5ct Diamond Princess (6.31×6.31mm)
Difference: 16% (5.6 mm²)
1.5ct Diamond (Princess, 6.31×6.31mm) has approx. 16% more face-up area than 1.5ct Zircon (Princess, 5.85×5.85mm).


Popular comparisons: