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Carat vs. Color  Length*  Width*
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1 Ct Apatite (Round)

versus image

1 Ct Fluorite (Round)

Green
 
White
6.44×6.44 mm 6.45×6.45 mm
Actual size of 1ct Apatite
Actual size of 1ct Fluorite

Settings
x Ring: Skin tone:
Ring width: 3.0 mm
Saved...
Left finger image
Ring on left finger
Green 1ct Apatite on a ring
64 mm
Right finger image
Ring on a right finger
White 1ct Fluorite on a ring
Your settings
Ring
Gold
Skin tone
Light
Ring diameter
16.9 mm
Ring width
3.0 mm
Finger length
64 mm
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 1ct Apatite Round (6.44×6.44mm, Green) and 1ct Fluorite Round (6.45×6.45mm, White) 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.

Face-up Size

All things being equal, Apatite will face-up slightly smaller than Fluorite for a given carat weight, because it has higher specific gravity (3.2 vs. 3.18 - this means it's "slightlyheavier" 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.


1 Ct Apatite (Round) 1 Ct Fluorite (Round)
6.44×6.44 mm → 32.57 mm² vs. 32.67 mm² ← 6.45×6.45 mm
Face-up size outline
Face-up size outline
1ct Apatite Round (6.44×6.44mm)
1ct Fluorite Round (6.45×6.45mm)
Difference: 0.3% (0.1 mm²)
1ct Fluorite Round (6.45×6.45mm) has approx. 0.3% more face-up area than 1ct Apatite Round (6.44×6.44mm).


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