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36ct Kyanite (Cushion, 18.79×18.79mm, Blue) vs 36ct Sapphire (Cushion, 18.28×18.28mm, Blue)


Quick summary: When looked from above (face-up position), 36ct Kyanite (18.79×18.79mm, cushion cut) appears 6% larger than 36ct Sapphire (18.28×18.28mm, cushion cut). See below how they compare side-by-side on a ring and finger.

36ct Kyanite (cushion cut)
vs
 36ct Sapphire (cushion cut)
blue
 
blue
18.79×18.79 mm 18.28×18.28 mm
actual size
Actual size of 36ct Kyanite (cushion cut, 18.79×18.79mm, Blue color)   Actual size of 36ct Sapphire (cushion cut, 18.28×18.28mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 36ct Kyanite (cushion cut, 18.79×18.79mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 36ct Sapphire (cushion cut, 18.28×18.28mm) 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
 112% vs 109%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 36ct Kyanite Cushion (18.79×18.79mm, Blue) and 36ct Sapphire Cushion (18.28×18.28mm, 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.


36 Ct Kyanite (Cushion) 36 Ct Sapphire (Cushion)
18.79×18.79 mm vs 18.28×18.28 mm
317.76 mm²   300.74 mm²
Face-up size outline for 36ct Kyanite (18.79×18.79mm, cushion cut)
Face-up size outline for 36ct Sapphire (18.28×18.28mm, cushion cut)
36ct Kyanite Cushion (18.79×18.79mm)
36ct Sapphire Cushion (18.28×18.28mm)
Difference: 6% (17.02 mm²)
36ct Kyanite (Cushion, 18.79×18.79mm) has approx. 6% more face-up area than 36ct Sapphire (Cushion, 18.28×18.28mm).


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