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15ct Kyanite (Baguette, 17.58×11.72mm, Blue) vs 15ct Sapphire (Baguette, 17.09×11.39mm, Blue)


Quick summary: When looked from above (face-up position), 15ct Kyanite (17.58×11.72mm, baguette cut) appears 6% larger than 15ct Sapphire (17.09×11.39mm, baguette cut). See below how they compare side-by-side on a ring and finger.

15ct Kyanite (baguette cut)
vs
 15ct Sapphire (baguette cut)
blue
 
blue
17.58×11.72 mm 17.09×11.39 mm
actual size
Actual size of 15ct Kyanite (baguette cut, 17.58×11.72mm, Blue color)   Actual size of 15ct Sapphire (baguette cut, 17.09×11.39mm, 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 (baguette cut, 17.58×11.72mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 15ct Sapphire (baguette cut, 17.09×11.39mm) 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
 70% vs 68%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 15ct Kyanite Baguette (17.58×11.72mm, Blue) and 15ct Sapphire Baguette (17.09×11.39mm, 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 (Baguette) 15 Ct Sapphire (Baguette)
17.58×11.72 mm vs 17.09×11.39 mm
206.04 mm²   194.66 mm²
Face-up size outline for 15ct Kyanite (17.58×11.72mm, baguette cut)
Face-up size outline for 15ct Sapphire (17.09×11.39mm, baguette cut)
15ct Kyanite Baguette (17.58×11.72mm)
15ct Sapphire Baguette (17.09×11.39mm)
Difference: 6% (11.38 mm²)
15ct Kyanite (Baguette, 17.58×11.72mm) has approx. 6% more face-up area than 15ct Sapphire (Baguette, 17.09×11.39mm).


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