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9.5ct Kyanite (Radiant, 12×12mm, Blue) vs 9.5ct Benitoite (Radiant, 12.03×12.03mm, Blue)


Quick summary: When looked from above (face-up position), 9.5ct Benitoite (12.03×12.03mm, radiant cut) appears 0.5% larger than 9.5ct Kyanite (12×12mm, radiant cut). See below how they compare side-by-side on a ring and finger.

9.5ct Kyanite (radiant cut)
vs
 9.5ct Benitoite (radiant cut)
blue
 
blue
12×12 mm 12.03×12.03 mm
actual size
Actual size of 9.5ct Kyanite (radiant cut, 12×12mm, Blue color)   Actual size of 9.5ct Benitoite (radiant cut, 12.03×12.03mm, 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 (radiant cut, 12×12mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 9.5ct Benitoite (radiant cut, 12.03×12.03mm) 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
 72% vs 72%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 9.5ct Kyanite Radiant (12×12mm, Blue) and 9.5ct Benitoite Radiant (12.03×12.03mm, 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 (Radiant) 9.5 Ct Benitoite (Radiant)
12×12 mm vs 12.03×12.03 mm
136.8 mm²   137.48 mm²
Face-up size outline for 9.5ct Benitoite (12.03×12.03mm, radiant cut)
Face-up size outline for 9.5ct Kyanite (12×12mm, radiant cut)
9.5ct Kyanite Radiant (12×12mm)
9.5ct Benitoite Radiant (12.03×12.03mm)
Difference: 0.5% (0.68 mm²)
9.5ct Benitoite (Radiant, 12.03×12.03mm) has approx. 0.5% more face-up area than 9.5ct Kyanite (Radiant, 12×12mm).


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