×
carat vs. color  length*  width*
  ×

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

28ct Kyanite (Princess, 16.4×16.4mm, Blue) vs 28ct Sapphire (Princess, 15.95×15.95mm, Blue)


Quick summary: When looked from above (face-up position), 28ct Kyanite (16.4×16.4mm, princess cut) appears 6% larger than 28ct Sapphire (15.95×15.95mm, princess cut). See below how they compare side-by-side on a ring and finger.

28ct Kyanite (princess cut)
vs
 28ct Sapphire (princess cut)
blue
 
blue
16.4×16.4 mm 15.95×15.95 mm
actual size
Actual size of 28ct Kyanite (princess cut, 16.4×16.4mm, Blue color)   Actual size of 28ct Sapphire (princess cut, 15.95×15.95mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 28ct Kyanite (princess cut, 16.4×16.4mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 28ct Sapphire (princess cut, 15.95×15.95mm) 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
 98% vs 95%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 28ct Kyanite Princess (16.4×16.4mm, Blue) and 28ct Sapphire Princess (15.95×15.95mm, 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, Sapphire will face-up smaller than Kyanite for a given carat weight, because it has higher specific gravity (4 vs. 3.68 - this means it's "heavier" compared to Kyanite 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.


28 Ct Kyanite (Princess) 28 Ct Sapphire (Princess)
16.4×16.4 mm vs 15.95×15.95 mm
268.96 mm²   254.4 mm²
Face-up size outline for 28ct Kyanite (16.4×16.4mm, princess cut)
Face-up size outline for 28ct Sapphire (15.95×15.95mm, princess cut)
28ct Kyanite Princess (16.4×16.4mm)
28ct Sapphire Princess (15.95×15.95mm)
Difference: 6% (14.56 mm²)
28ct Kyanite (Princess, 16.4×16.4mm) has approx. 6% more face-up area than 28ct Sapphire (Princess, 15.95×15.95mm).


Popular comparisons: