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13ct Sapphire (Emerald, 15.01×11.12mm, Blue) vs 13ct Fluorite (Emerald, 16.21×12.01mm, Bluish Green)


Quick summary: When looked from above (face-up position), 13ct Fluorite (16.21×12.01mm, emerald cut) appears 17% larger than 13ct Sapphire (15.01×11.12mm, emerald cut). See below how they compare side-by-side on a ring and finger.

13ct Sapphire (emerald cut)
vs
 13ct Fluorite (emerald cut)
blue
 
bluish green
15.01×11.12 mm 16.21×12.01 mm
actual size
Actual size of 13ct Sapphire (emerald cut, 15.01×11.12mm, Blue color)   Actual size of 13ct Fluorite (emerald cut, 16.21×12.01mm, 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 13ct Sapphire (emerald cut, 15.01×11.12mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Bluish Green 13ct Fluorite (emerald cut, 16.21×12.01mm) 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
 66% vs 72%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 13ct Sapphire Emerald (15.01×11.12mm, Blue) and 13ct Fluorite Emerald (16.21×12.01mm, 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.


13 Ct Sapphire (Emerald) 13 Ct Fluorite (Emerald)
15.01×11.12 mm vs 16.21×12.01 mm
155.23 mm²   181.05 mm²
Face-up size outline for 13ct Fluorite (16.21×12.01mm, emerald cut)
Face-up size outline for 13ct Sapphire (15.01×11.12mm, emerald cut)
13ct Sapphire Emerald (15.01×11.12mm)
13ct Fluorite Emerald (16.21×12.01mm)
Difference: 17% (25.82 mm²)
13ct Fluorite (Emerald, 16.21×12.01mm) has approx. 17% more face-up area than 13ct Sapphire (Emerald, 15.01×11.12mm).


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