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28ct Fluorite (Round, 19.6×19.6mm, Bluish Green) vs 28ct Topaz (Round, 18.93×18.93mm, Blue)


Quick summary: When looked from above (face-up position), 28ct Fluorite (19.6×19.6mm, round cut) appears 7% larger than 28ct Topaz (18.93×18.93mm, round cut). See below how they compare side-by-side on a ring and finger.

28ct Fluorite (round cut)
vs
 28ct Topaz (round cut)
bluish green
 
blue
19.6×19.6 mm 18.93×18.93 mm
actual size
Actual size of 28ct Fluorite (round cut, 19.6×19.6mm, Bluish Green color)   Actual size of 28ct Topaz (round cut, 18.93×18.93mm, 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 28ct Fluorite (round cut, 19.6×19.6mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 28ct Topaz (round cut, 18.93×18.93mm) 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
 116% vs 113%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 28ct Fluorite Round (19.6×19.6mm, Bluish Green) and 28ct Topaz Round (18.93×18.93mm, 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.


28 Ct Fluorite (Round) 28 Ct Topaz (Round)
19.6×19.6 mm vs 18.93×18.93 mm
301.72 mm²   281.44 mm²
Face-up size outline for 28ct Fluorite (19.6×19.6mm, round cut)
Face-up size outline for 28ct Topaz (18.93×18.93mm, round cut)
28ct Fluorite Round (19.6×19.6mm)
28ct Topaz Round (18.93×18.93mm)
Difference: 7% (20.28 mm²)
28ct Fluorite (Round, 19.6×19.6mm) has approx. 7% more face-up area than 28ct Topaz (Round, 18.93×18.93mm).


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