×
carat vs. color  length*  width*
  ×

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

7ct Kyanite (Oval, 15.08×10.05mm, Blue) vs 7ct Benitoite (Oval, 15.12×10.08mm, Blue)


Quick summary: When looked from above (face-up position), 7ct Benitoite (15.12×10.08mm, oval cut) appears 0.6% larger than 7ct Kyanite (15.08×10.05mm, oval cut). See below how they compare side-by-side on a ring and finger.

7ct Kyanite (oval cut)
vs
 7ct Benitoite (oval cut)
blue
 
blue
15.08×10.05 mm 15.12×10.08 mm
actual size
Actual size of 7ct Kyanite (oval cut, 15.08×10.05mm, Blue color)   Actual size of 7ct Benitoite (oval cut, 15.12×10.08mm, Blue color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 7ct Kyanite (oval cut, 15.08×10.05mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 7ct Benitoite (oval cut, 15.12×10.08mm) 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
 60% vs 60%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 7ct Kyanite Oval (15.08×10.05mm, Blue) and 7ct Benitoite Oval (15.12×10.08mm, 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.


7 Ct Kyanite (Oval) 7 Ct Benitoite (Oval)
15.08×10.05 mm vs 15.12×10.08 mm
124.27 mm²   124.98 mm²
Face-up size outline for 7ct Benitoite (15.12×10.08mm, oval cut)
Face-up size outline for 7ct Kyanite (15.08×10.05mm, oval cut)
7ct Kyanite Oval (15.08×10.05mm)
7ct Benitoite Oval (15.12×10.08mm)
Difference: 0.6% (0.71 mm²)
7ct Benitoite (Oval, 15.12×10.08mm) has approx. 0.6% more face-up area than 7ct Kyanite (Oval, 15.08×10.05mm).


Popular comparisons: