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6ct Tanzanite (Radiant, 10.62×10.62mm, Blue) vs 6ct Kyanite (Radiant, 10.29×10.29mm, Blue)


Quick summary: When looked from above (face-up position), 6ct Tanzanite (10.62×10.62mm, radiant cut) appears 7% larger than 6ct Kyanite (10.29×10.29mm, radiant cut). See below how they compare side-by-side on a ring and finger.

6ct Tanzanite (radiant cut)
vs
 6ct Kyanite (radiant cut)
blue
 
blue
10.62×10.62 mm 10.29×10.29 mm
actual size
Actual size of 6ct Tanzanite (radiant cut, 10.62×10.62mm, Blue color)   Actual size of 6ct Kyanite (radiant cut, 10.29×10.29mm, Blue color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 6ct Tanzanite (radiant cut, 10.62×10.62mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 6ct Kyanite (radiant cut, 10.29×10.29mm) 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
 63% vs 61%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 6ct Tanzanite Radiant (10.62×10.62mm, Blue) and 6ct Kyanite Radiant (10.29×10.29mm, 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.


6 Ct Tanzanite (Radiant) 6 Ct Kyanite (Radiant)
10.62×10.62 mm vs 10.29×10.29 mm
107.15 mm²   100.59 mm²
Face-up size outline for 6ct Tanzanite (10.62×10.62mm, radiant cut)
Face-up size outline for 6ct Kyanite (10.29×10.29mm, radiant cut)
6ct Tanzanite Radiant (10.62×10.62mm)
6ct Kyanite Radiant (10.29×10.29mm)
Difference: 7% (6.56 mm²)
6ct Tanzanite (Radiant, 10.62×10.62mm) has approx. 7% more face-up area than 6ct Kyanite (Radiant, 10.29×10.29mm).


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