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15ct Kyanite (Asscher, 13.52×13.52mm, Blue) vs 15ct Sapphire (Asscher, 13.15×13.15mm, Blue)


Quick summary: When looked from above (face-up position), 15ct Kyanite (13.52×13.52mm, asscher cut) appears 6% larger than 15ct Sapphire (13.15×13.15mm, asscher cut). See below how they compare side-by-side on a ring and finger.

15ct Kyanite (asscher cut)
vs
 15ct Sapphire (asscher cut)
blue
 
blue
13.52×13.52 mm 13.15×13.15 mm
actual size
Actual size of 15ct Kyanite (asscher cut, 13.52×13.52mm, Blue color)   Actual size of 15ct Sapphire (asscher cut, 13.15×13.15mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 15ct Kyanite (asscher cut, 13.52×13.52mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 15ct Sapphire (asscher cut, 13.15×13.15mm) 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
 80% vs 78%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 15ct Kyanite Asscher (13.52×13.52mm, Blue) and 15ct Sapphire Asscher (13.15×13.15mm, 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, Sapphire will face-up smaller than Kyanite for a given carat weight, because it has higher specific gravity (4 vs. 3.68 - this means it's "heavier" compared to Kyanite 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.


15 Ct Kyanite (Asscher) 15 Ct Sapphire (Asscher)
13.52×13.52 mm vs 13.15×13.15 mm
168.17 mm²   159.09 mm²
Face-up size outline for 15ct Kyanite (13.52×13.52mm, asscher cut)
Face-up size outline for 15ct Sapphire (13.15×13.15mm, asscher cut)
15ct Kyanite Asscher (13.52×13.52mm)
15ct Sapphire Asscher (13.15×13.15mm)
Difference: 6% (9.08 mm²)
15ct Kyanite (Asscher, 13.52×13.52mm) has approx. 6% more face-up area than 15ct Sapphire (Asscher, 13.15×13.15mm).


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