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11ct Sapphire (Cushion, 12.31×12.31mm, Blue) vs 11ct Fluorite (Cushion, 13.29×13.29mm, Bluish Green)


Quick summary: When looked from above (face-up position), 11ct Fluorite (13.29×13.29mm, cushion cut) appears 17% larger than 11ct Sapphire (12.31×12.31mm, cushion cut). See below how they compare side-by-side on a ring and finger.

11ct Sapphire (cushion cut)
vs
 11ct Fluorite (cushion cut)
blue
 
bluish green
12.31×12.31 mm 13.29×13.29 mm
actual size
Actual size of 11ct Sapphire (cushion cut, 12.31×12.31mm, Blue color)   Actual size of 11ct Fluorite (cushion cut, 13.29×13.29mm, Bluish Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 11ct Sapphire (cushion cut, 12.31×12.31mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Bluish Green 11ct Fluorite (cushion cut, 13.29×13.29mm) 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
 73% vs 79%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 11ct Sapphire Cushion (12.31×12.31mm, Blue) and 11ct Fluorite Cushion (13.29×13.29mm, Bluish Green) 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 Fluorite for a given carat weight, because it has higher specific gravity (4 vs. 3.18 - this means it's "heavier" compared to Fluorite 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.


11 Ct Sapphire (Cushion) 11 Ct Fluorite (Cushion)
12.31×12.31 mm vs 13.29×13.29 mm
136.38 mm²   158.96 mm²
Face-up size outline for 11ct Fluorite (13.29×13.29mm, cushion cut)
Face-up size outline for 11ct Sapphire (12.31×12.31mm, cushion cut)
11ct Sapphire Cushion (12.31×12.31mm)
11ct Fluorite Cushion (13.29×13.29mm)
Difference: 17% (22.58 mm²)
11ct Fluorite (Cushion, 13.29×13.29mm) has approx. 17% more face-up area than 11ct Sapphire (Cushion, 12.31×12.31mm).


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