×
carat vs. color  length*  width*
  ×

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

10ct Kyanite (Cushion, 12.26×12.26mm, Blue) vs 10ct Benitoite (Cushion, 12.3×12.3mm, Blue)


Quick summary: When looked from above (face-up position), 10ct Benitoite (12.3×12.3mm, cushion cut) appears 0.7% larger than 10ct Kyanite (12.26×12.26mm, cushion cut). See below how they compare side-by-side on a ring and finger.

10ct Kyanite (cushion cut)
vs
 10ct Benitoite (cushion cut)
blue
 
blue
12.26×12.26 mm 12.3×12.3 mm
actual size
Actual size of 10ct Kyanite (cushion cut, 12.26×12.26mm, Blue color)   Actual size of 10ct Benitoite (cushion cut, 12.3×12.3mm, Blue color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 10ct Kyanite (cushion cut, 12.26×12.26mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 10ct Benitoite (cushion cut, 12.3×12.3mm) 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
 73% vs 73%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 10ct Kyanite Cushion (12.26×12.26mm, Blue) and 10ct Benitoite Cushion (12.3×12.3mm, 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.


10 Ct Kyanite (Cushion) 10 Ct Benitoite (Cushion)
12.26×12.26 mm vs 12.3×12.3 mm
135.28 mm²   136.16 mm²
Face-up size outline for 10ct Benitoite (12.3×12.3mm, cushion cut)
Face-up size outline for 10ct Kyanite (12.26×12.26mm, cushion cut)
10ct Kyanite Cushion (12.26×12.26mm)
10ct Benitoite Cushion (12.3×12.3mm)
Difference: 0.7% (0.88 mm²)
10ct Benitoite (Cushion, 12.3×12.3mm) has approx. 0.7% more face-up area than 10ct Kyanite (Cushion, 12.26×12.26mm).


Popular comparisons: