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9ct Tanzanite (Trillion, 16.13×16.13mm, Blue) vs 9ct Kyanite (Trillion, 15.63×15.63mm, Blue)


Quick summary: When looked from above (face-up position), 9ct Tanzanite (16.13×16.13mm, trillion cut) appears 7% larger than 9ct Kyanite (15.63×15.63mm, trillion cut). See below how they compare side-by-side on a ring and finger.

9ct Tanzanite (trillion cut)
vs
 9ct Kyanite (trillion cut)
blue
 
blue
16.13×16.13 mm 15.63×15.63 mm
actual size
Actual size of 9ct Tanzanite (trillion cut, 16.13×16.13mm, Blue color)   Actual size of 9ct Kyanite (trillion cut, 15.63×15.63mm, Blue color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 9ct Tanzanite (trillion cut, 16.13×16.13mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 9ct Kyanite (trillion cut, 15.63×15.63mm) 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
 96% vs 93%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 9ct Tanzanite Trillion (16.13×16.13mm, Blue) and 9ct Kyanite Trillion (15.63×15.63mm, 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 smaller than Tanzanite for a given carat weight, because it has higher specific gravity (3.68 vs. 3.35 - this means it's "heavier" compared to Tanzanite 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 Ct Tanzanite (Trillion) 9 Ct Kyanite (Trillion)
16.13×16.13 mm vs 15.63×15.63 mm
161.31 mm²   151.46 mm²
Face-up size outline for 9ct Tanzanite (16.13×16.13mm, trillion cut)
Face-up size outline for 9ct Kyanite (15.63×15.63mm, trillion cut)
9ct Tanzanite Trillion (16.13×16.13mm)
9ct Kyanite Trillion (15.63×15.63mm)
Difference: 7% (9.85 mm²)
9ct Tanzanite (Trillion, 16.13×16.13mm) has approx. 7% more face-up area than 9ct Kyanite (Trillion, 15.63×15.63mm).


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