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13ct Fluorite (Marquise, 24.68×12.34mm, Bluish Green) vs 13ct Topaz (Marquise, 23.84×11.92mm, Blue)


Quick summary: When looked from above (face-up position), 13ct Fluorite (24.68×12.34mm, marquise cut) appears 7% larger than 13ct Topaz (23.84×11.92mm, marquise cut). See below how they compare side-by-side on a ring and finger.

13ct Fluorite (marquise cut)
vs
13ct Topaz (marquise cut)
bluish green
 
blue
24.68×12.34 mm 23.84×11.92 mm
actual size
Actual size of 13ct Fluorite (marquise cut, 24.68×12.34mm, Bluish Green color)   Actual size of 13ct Topaz (marquise cut, 23.84×11.92mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Bluish Green 13ct Fluorite (marquise cut, 24.68×12.34mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 13ct Topaz (marquise cut, 23.84×11.92mm) 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
74% vs 71%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 13ct Fluorite Marquise (24.68×12.34mm, Bluish Green) and 13ct Topaz Marquise (23.84×11.92mm, 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, Topaz will face-up smaller than Fluorite for a given carat weight, because it has higher specific gravity (3.53 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 Fluorite (Marquise) 13 Ct Topaz (Marquise)
24.68×12.34 mm vs 23.84×11.92 mm
216.23 mm²   201.76 mm²
Face-up size outline for 13ct Fluorite (24.68×12.34mm, marquise cut)
Face-up size outline for 13ct Topaz (23.84×11.92mm, marquise cut)
13ct Fluorite Marquise (24.68×12.34mm)
13ct Topaz Marquise (23.84×11.92mm)
Difference: 7% (14.47 mm²)
13ct Fluorite (Marquise, 24.68×12.34mm) has approx. 7% more face-up area than 13ct Topaz (Marquise, 23.84×11.92mm).


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