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15ct Kyanite (Marquise, 24.66×12.33mm, Blue) vs 15ct Sapphire (Marquise, 23.98×11.99mm, Blue)


Quick summary: When looked from above (face-up position), 15ct Kyanite (24.66×12.33mm, marquise cut) appears 6% larger than 15ct Sapphire (23.98×11.99mm, marquise cut). See below how they compare side-by-side on a ring and finger.

15ct Kyanite (marquise cut)
vs
 15ct Sapphire (marquise cut)
blue
 
blue
24.66×12.33 mm 23.98×11.99 mm
actual size
Actual size of 15ct Kyanite (marquise cut, 24.66×12.33mm, Blue color)   Actual size of 15ct Sapphire (marquise cut, 23.98×11.99mm, 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 (marquise cut, 24.66×12.33mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 15ct Sapphire (marquise cut, 23.98×11.99mm) 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
 73% vs 71%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 15ct Kyanite Marquise (24.66×12.33mm, Blue) and 15ct Sapphire Marquise (23.98×11.99mm, 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 (Marquise) 15 Ct Sapphire (Marquise)
24.66×12.33 mm vs 23.98×11.99 mm
215.88 mm²   204.14 mm²
Face-up size outline for 15ct Kyanite (24.66×12.33mm, marquise cut)
Face-up size outline for 15ct Sapphire (23.98×11.99mm, marquise cut)
15ct Kyanite Marquise (24.66×12.33mm)
15ct Sapphire Marquise (23.98×11.99mm)
Difference: 6% (11.74 mm²)
15ct Kyanite (Marquise, 24.66×12.33mm) has approx. 6% more face-up area than 15ct Sapphire (Marquise, 23.98×11.99mm).


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