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10ct Kyanite (Radiant, 12.2×12.2mm, Blue) vs 10ct Benitoite (Radiant, 12.24×12.24mm, Blue)


Quick summary: When looked from above (face-up position), 10ct Benitoite (12.24×12.24mm, radiant cut) appears 0.7% larger than 10ct Kyanite (12.2×12.2mm, radiant cut). See below how they compare side-by-side on a ring and finger.

10ct Kyanite (radiant cut)
vs
 10ct Benitoite (radiant cut)
blue
 
blue
12.2×12.2 mm 12.24×12.24 mm
actual size
Actual size of 10ct Kyanite (radiant cut, 12.2×12.2mm, Blue color)   Actual size of 10ct Benitoite (radiant cut, 12.24×12.24mm, Blue color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 10ct Kyanite (radiant cut, 12.2×12.2mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 10ct Benitoite (radiant cut, 12.24×12.24mm) 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
 73% vs 73%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 10ct Kyanite Radiant (12.2×12.2mm, Blue) and 10ct Benitoite Radiant (12.24×12.24mm, 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.


10 Ct Kyanite (Radiant) 10 Ct Benitoite (Radiant)
12.2×12.2 mm vs 12.24×12.24 mm
141.4 mm²   142.33 mm²
Face-up size outline for 10ct Benitoite (12.24×12.24mm, radiant cut)
Face-up size outline for 10ct Kyanite (12.2×12.2mm, radiant cut)
10ct Kyanite Radiant (12.2×12.2mm)
10ct Benitoite Radiant (12.24×12.24mm)
Difference: 0.7% (0.93 mm²)
10ct Benitoite (Radiant, 12.24×12.24mm) has approx. 0.7% more face-up area than 10ct Kyanite (Radiant, 12.2×12.2mm).


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