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10ct Tanzanite (Trillion, 16.71×16.71mm, Blue) vs 10ct Kyanite (Trillion, 16.19×16.19mm, Blue)


Quick summary: When looked from above (face-up position), 10ct Tanzanite (16.71×16.71mm, trillion cut) appears 7% larger than 10ct Kyanite (16.19×16.19mm, trillion cut). See below how they compare side-by-side on a ring and finger.

10ct Tanzanite (trillion cut)
vs
 10ct Kyanite (trillion cut)
blue
 
blue
16.71×16.71 mm 16.19×16.19 mm
actual size
Actual size of 10ct Tanzanite (trillion cut, 16.71×16.71mm, Blue color)   Actual size of 10ct Kyanite (trillion cut, 16.19×16.19mm, 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 Tanzanite (trillion cut, 16.71×16.71mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 10ct Kyanite (trillion cut, 16.19×16.19mm) 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
 99% vs 96%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 10ct Tanzanite Trillion (16.71×16.71mm, Blue) and 10ct Kyanite Trillion (16.19×16.19mm, 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.


10 Ct Tanzanite (Trillion) 10 Ct Kyanite (Trillion)
16.71×16.71 mm vs 16.19×16.19 mm
173.12 mm²   162.51 mm²
Face-up size outline for 10ct Tanzanite (16.71×16.71mm, trillion cut)
Face-up size outline for 10ct Kyanite (16.19×16.19mm, trillion cut)
10ct Tanzanite Trillion (16.71×16.71mm)
10ct Kyanite Trillion (16.19×16.19mm)
Difference: 7% (10.61 mm²)
10ct Tanzanite (Trillion, 16.71×16.71mm) has approx. 7% more face-up area than 10ct Kyanite (Trillion, 16.19×16.19mm).


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