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4ct Kyanite (Pear, 13.88×8.36mm, Blue) vs 4ct Benitoite (Pear, 13.91×8.38mm, Blue)


Quick summary: When looked from above (face-up position), 4ct Benitoite (13.91×8.38mm, pear cut) appears 0.4% larger than 4ct Kyanite (13.88×8.36mm, pear cut). See below how they compare side-by-side on a ring and finger.

4ct Kyanite (pear cut)
vs
 4ct Benitoite (pear cut)
blue
 
blue
13.88×8.36 mm 13.91×8.38 mm
actual size
Actual size of 4ct Kyanite (pear cut, 13.88×8.36mm, Blue color)   Actual size of 4ct Benitoite (pear cut, 13.91×8.38mm, Blue color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 4ct Kyanite (pear cut, 13.88×8.36mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 4ct Benitoite (pear cut, 13.91×8.38mm) 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
 50% vs 50%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 4ct Kyanite Pear (13.88×8.36mm, Blue) and 4ct Benitoite Pear (13.91×8.38mm, 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.


4 Ct Kyanite (Pear) 4 Ct Benitoite (Pear)
13.88×8.36 mm vs 13.91×8.38 mm
84.71 mm²   85.09 mm²
Face-up size outline for 4ct Benitoite (13.91×8.38mm, pear cut)
Face-up size outline for 4ct Kyanite (13.88×8.36mm, pear cut)
4ct Kyanite Pear (13.88×8.36mm)
4ct Benitoite Pear (13.91×8.38mm)
Difference: 0.4% (0.38 mm²)
4ct Benitoite (Pear, 13.91×8.38mm) has approx. 0.4% more face-up area than 4ct Kyanite (Pear, 13.88×8.36mm).


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