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11ct Sapphire (Cabochon, 15.23×10.15mm, Blue) vs 11ct Fluorite (Cabochon, 16.43×10.95mm, Bluish Green)


Quick summary: When looked from above (face-up position), 11ct Fluorite (16.43×10.95mm, cabochon cut) appears 16% larger than 11ct Sapphire (15.23×10.15mm, cabochon cut). See below how they compare side-by-side on a ring and finger.

11ct Sapphire (cabochon cut)
vs
 11ct Fluorite (cabochon cut)
blue
 
bluish green
15.23×10.15 mm 16.43×10.95 mm
actual size
Actual size of 11ct Sapphire (cabochon cut, 15.23×10.15mm, Blue color)   Actual size of 11ct Fluorite (cabochon cut, 16.43×10.95mm, 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 (cabochon cut, 15.23×10.15mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Bluish Green 11ct Fluorite (cabochon cut, 16.43×10.95mm) 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
 61% vs 65%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 11ct Sapphire Cabochon (15.23×10.15mm, Blue) and 11ct Fluorite Cabochon (16.43×10.95mm, 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 (Cabochon) 11 Ct Fluorite (Cabochon)
15.23×10.15 mm vs 16.43×10.95 mm
126.76 mm²   147.52 mm²
Face-up size outline for 11ct Fluorite (16.43×10.95mm, cabochon cut)
Face-up size outline for 11ct Sapphire (15.23×10.15mm, cabochon cut)
11ct Sapphire Cabochon (15.23×10.15mm)
11ct Fluorite Cabochon (16.43×10.95mm)
Difference: 16% (20.76 mm²)
11ct Fluorite (Cabochon, 16.43×10.95mm) has approx. 16% more face-up area than 11ct Sapphire (Cabochon, 15.23×10.15mm).


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