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30ct Fluorite (Marquise, 32.62×16.31mm, Bluish Green) vs 30ct Topaz (Marquise, 31.5×15.75mm, Blue)


Quick summary: When looked from above (face-up position), 30ct Fluorite (32.62×16.31mm, marquise cut) appears 7% larger than 30ct Topaz (31.5×15.75mm, marquise cut). See below how they compare side-by-side on a ring and finger.

30ct Fluorite (marquise cut)
vs
 30ct Topaz (marquise cut)
bluish green
 
blue
32.62×16.31 mm 31.5×15.75 mm
actual size
Actual size of 30ct Fluorite (marquise cut, 32.62×16.31mm, Bluish Green color)   Actual size of 30ct Topaz (marquise cut, 31.5×15.75mm, 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 30ct Fluorite (marquise cut, 32.62×16.31mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 30ct Topaz (marquise cut, 31.5×15.75mm) 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
 97% vs 94%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 30ct Fluorite Marquise (32.62×16.31mm, Bluish Green) and 30ct Topaz Marquise (31.5×15.75mm, 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.


30 Ct Fluorite (Marquise) 30 Ct Topaz (Marquise)
32.62×16.31 mm vs 31.5×15.75 mm
377.74 mm²   352.25 mm²
Face-up size outline for 30ct Fluorite (32.62×16.31mm, marquise cut)
Face-up size outline for 30ct Topaz (31.5×15.75mm, marquise cut)
30ct Fluorite Marquise (32.62×16.31mm)
30ct Topaz Marquise (31.5×15.75mm)
Difference: 7% (25.49 mm²)
30ct Fluorite (Marquise, 32.62×16.31mm) has approx. 7% more face-up area than 30ct Topaz (Marquise, 31.5×15.75mm).


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