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9.5ct Kyanite (Round, 13.02×13.02mm, Blue) vs 9.5ct Benitoite (Round, 13.05×13.05mm, Blue)


Quick summary: When looked from above (face-up position), 9.5ct Benitoite (13.05×13.05mm, round cut) appears 0.5% larger than 9.5ct Kyanite (13.02×13.02mm, round cut). See below how they compare side-by-side on a ring and finger.

9.5ct Kyanite (round cut)
vs
 9.5ct Benitoite (round cut)
blue
 
blue
13.02×13.02 mm 13.05×13.05 mm
actual size
Actual size of 9.5ct Kyanite (round cut, 13.02×13.02mm, Blue color)   Actual size of 9.5ct Benitoite (round cut, 13.05×13.05mm, 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 (round cut, 13.02×13.02mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 9.5ct Benitoite (round cut, 13.05×13.05mm) 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
 78% vs 78%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 9.5ct Kyanite Round (13.02×13.02mm, Blue) and 9.5ct Benitoite Round (13.05×13.05mm, 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 (Round) 9.5 Ct Benitoite (Round)
13.02×13.02 mm vs 13.05×13.05 mm
133.14 mm²   133.76 mm²
Face-up size outline for 9.5ct Benitoite (13.05×13.05mm, round cut)
Face-up size outline for 9.5ct Kyanite (13.02×13.02mm, round cut)
9.5ct Kyanite Round (13.02×13.02mm)
9.5ct Benitoite Round (13.05×13.05mm)
Difference: 0.5% (0.62 mm²)
9.5ct Benitoite (Round, 13.05×13.05mm) has approx. 0.5% more face-up area than 9.5ct Kyanite (Round, 13.02×13.02mm).


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