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9.5ct Kyanite (Cabochon, 14.91×9.94mm, Blue) vs 9.5ct Benitoite (Cabochon, 14.94×9.96mm, Blue)


Quick summary: When looked from above (face-up position), 9.5ct Benitoite (14.94×9.96mm, cabochon cut) appears 0.4% larger than 9.5ct Kyanite (14.91×9.94mm, cabochon cut). See below how they compare side-by-side on a ring and finger.

9.5ct Kyanite (cabochon cut)
vs
9.5ct Benitoite (cabochon cut)
blue
 
blue
14.91×9.94 mm 14.94×9.96 mm
actual size
Actual size of 9.5ct Kyanite (cabochon cut, 14.91×9.94mm, Blue color)   Actual size of 9.5ct Benitoite (cabochon cut, 14.94×9.96mm, Blue color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 9.5ct Kyanite (cabochon cut, 14.91×9.94mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 9.5ct Benitoite (cabochon cut, 14.94×9.96mm) 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
59% vs 59%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 9.5ct Kyanite Cabochon (14.91×9.94mm, Blue) and 9.5ct Benitoite Cabochon (14.94×9.96mm, 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.


9.5 Ct Kyanite (Cabochon) 9.5 Ct Benitoite (Cabochon)
14.91×9.94 mm vs 14.94×9.96 mm
121.53 mm²   122.02 mm²
Face-up size outline for 9.5ct Benitoite (14.94×9.96mm, cabochon cut)
Face-up size outline for 9.5ct Kyanite (14.91×9.94mm, cabochon cut)
9.5ct Kyanite Cabochon (14.91×9.94mm)
9.5ct Benitoite Cabochon (14.94×9.96mm)
Difference: 0.4% (0.49 mm²)
9.5ct Benitoite (Cabochon, 14.94×9.96mm) has approx. 0.4% more face-up area than 9.5ct Kyanite (Cabochon, 14.91×9.94mm).


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