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15ct Fluorite (Baguette, 18.45×12.3mm, Bluish Green) vs 15ct Topaz (Baguette, 17.82×11.88mm, Blue)


Quick summary: When looked from above (face-up position), 15ct Fluorite (18.45×12.3mm, baguette cut) appears 7% larger than 15ct Topaz (17.82×11.88mm, baguette cut). See below how they compare side-by-side on a ring and finger.

15ct Fluorite (baguette cut)
vs
 15ct Topaz (baguette cut)
bluish green
 
blue
18.45×12.3 mm 17.82×11.88 mm
actual size
Actual size of 15ct Fluorite (baguette cut, 18.45×12.3mm, Bluish Green color)   Actual size of 15ct Topaz (baguette cut, 17.82×11.88mm, 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 15ct Fluorite (baguette cut, 18.45×12.3mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 15ct Topaz (baguette cut, 17.82×11.88mm) 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 71%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 15ct Fluorite Baguette (18.45×12.3mm, Bluish Green) and 15ct Topaz Baguette (17.82×11.88mm, 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.


15 Ct Fluorite (Baguette) 15 Ct Topaz (Baguette)
18.45×12.3 mm vs 17.82×11.88 mm
226.94 mm²   211.7 mm²
Face-up size outline for 15ct Fluorite (18.45×12.3mm, baguette cut)
Face-up size outline for 15ct Topaz (17.82×11.88mm, baguette cut)
15ct Fluorite Baguette (18.45×12.3mm)
15ct Topaz Baguette (17.82×11.88mm)
Difference: 7% (15.24 mm²)
15ct Fluorite (Baguette, 18.45×12.3mm) has approx. 7% more face-up area than 15ct Topaz (Baguette, 17.82×11.88mm).


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