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5.5ct Kyanite (Trillion, 13.27×13.27mm, Blue) vs 5.5ct Benitoite (Trillion, 13.3×13.3mm, Blue)


Quick summary: When looked from above (face-up position), 5.5ct Benitoite (13.3×13.3mm, trillion cut) appears 0.4% larger than 5.5ct Kyanite (13.27×13.27mm, trillion cut). See below how they compare side-by-side on a ring and finger.

5.5ct Kyanite (trillion cut)
vs
 5.5ct Benitoite (trillion cut)
blue
 
blue
13.27×13.27 mm 13.3×13.3 mm
actual size
Actual size of 5.5ct Kyanite (trillion cut, 13.27×13.27mm, Blue color)   Actual size of 5.5ct Benitoite (trillion cut, 13.3×13.3mm, Blue color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 5.5ct Kyanite (trillion cut, 13.27×13.27mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 5.5ct Benitoite (trillion cut, 13.3×13.3mm) 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
 79% vs 79%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 5.5ct Kyanite Trillion (13.27×13.27mm, Blue) and 5.5ct Benitoite Trillion (13.3×13.3mm, 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.


5.5 Ct Kyanite (Trillion) 5.5 Ct Benitoite (Trillion)
13.27×13.27 mm vs 13.3×13.3 mm
109.18 mm²   109.67 mm²
Face-up size outline for 5.5ct Benitoite (13.3×13.3mm, trillion cut)
Face-up size outline for 5.5ct Kyanite (13.27×13.27mm, trillion cut)
5.5ct Kyanite Trillion (13.27×13.27mm)
5.5ct Benitoite Trillion (13.3×13.3mm)
Difference: 0.4% (0.49 mm²)
5.5ct Benitoite (Trillion, 13.3×13.3mm) has approx. 0.4% more face-up area than 5.5ct Kyanite (Trillion, 13.27×13.27mm).


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