×
carat vs. color  length*  width*
  ×

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

8ct Kyanite (Princess, 10.8×10.8mm, Blue) vs 8ct Benitoite (Princess, 10.83×10.83mm, Blue)


Quick summary: When looked from above (face-up position), 8ct Benitoite (10.83×10.83mm, princess cut) appears 0.6% larger than 8ct Kyanite (10.8×10.8mm, princess cut). See below how they compare side-by-side on a ring and finger.

8ct Kyanite (princess cut)
vs
 8ct Benitoite (princess cut)
blue
 
blue
10.8×10.8 mm 10.83×10.83 mm
actual size
Actual size of 8ct Kyanite (princess cut, 10.8×10.8mm, Blue color)   Actual size of 8ct Benitoite (princess cut, 10.83×10.83mm, Blue color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 8ct Kyanite (princess cut, 10.8×10.8mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 8ct Benitoite (princess cut, 10.83×10.83mm) 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
 64% vs 65%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 8ct Kyanite Princess (10.8×10.8mm, Blue) and 8ct Benitoite Princess (10.83×10.83mm, Blue) 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, Kyanite will face-up slightly smaller than Benitoite for a given carat weight, because it has higher specific gravity (3.68 vs. 3.65 - this means it's "slightly heavier" compared to Benitoite 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.


8 Ct Kyanite (Princess) 8 Ct Benitoite (Princess)
10.8×10.8 mm vs 10.83×10.83 mm
116.64 mm²   117.29 mm²
Face-up size outline for 8ct Benitoite (10.83×10.83mm, princess cut)
Face-up size outline for 8ct Kyanite (10.8×10.8mm, princess cut)
8ct Kyanite Princess (10.8×10.8mm)
8ct Benitoite Princess (10.83×10.83mm)
Difference: 0.6% (0.65 mm²)
8ct Benitoite (Princess, 10.83×10.83mm) has approx. 0.6% more face-up area than 8ct Kyanite (Princess, 10.8×10.8mm).


Popular comparisons: