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6.5ct Kyanite (Emerald, 12.26×9.08mm, Blue) vs 6.5ct Benitoite (Emerald, 12.29×9.1mm, Blue)


Quick summary: When looked from above (face-up position), 6.5ct Benitoite (12.29×9.1mm, emerald cut) appears 0.5% larger than 6.5ct Kyanite (12.26×9.08mm, emerald cut). See below how they compare side-by-side on a ring and finger.

6.5ct Kyanite (emerald cut)
vs
 6.5ct Benitoite (emerald cut)
blue
 
blue
12.26×9.08 mm 12.29×9.1 mm
actual size
Actual size of 6.5ct Kyanite (emerald cut, 12.26×9.08mm, Blue color)   Actual size of 6.5ct Benitoite (emerald cut, 12.29×9.1mm, Blue color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 6.5ct Kyanite (emerald cut, 12.26×9.08mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 6.5ct Benitoite (emerald cut, 12.29×9.1mm) 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
 54% vs 54%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 6.5ct Kyanite Emerald (12.26×9.08mm, Blue) and 6.5ct Benitoite Emerald (12.29×9.1mm, 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.


6.5 Ct Kyanite (Emerald) 6.5 Ct Benitoite (Emerald)
12.26×9.08 mm vs 12.29×9.1 mm
103.53 mm²   104.01 mm²
Face-up size outline for 6.5ct Benitoite (12.29×9.1mm, emerald cut)
Face-up size outline for 6.5ct Kyanite (12.26×9.08mm, emerald cut)
6.5ct Kyanite Emerald (12.26×9.08mm)
6.5ct Benitoite Emerald (12.29×9.1mm)
Difference: 0.5% (0.48 mm²)
6.5ct Benitoite (Emerald, 12.29×9.1mm) has approx. 0.5% more face-up area than 6.5ct Kyanite (Emerald, 12.26×9.08mm).


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