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5ct Apatite (Cushion, 10.3×10.3mm, Bluish Green) vs 5ct Topaz (Oval, 13.49×8.99mm, Light Blue)


Quick summary: When looked from above (face-up position), 5ct Topaz (13.49×8.99mm, oval cut) appears 4% larger than 5ct Apatite (10.3×10.3mm, cushion cut). See below how they compare side-by-side on a ring and finger.

5ct Apatite (cushion cut)
vs
5ct Topaz (oval cut)
bluish green
 
light blue
10.3×10.3 mm 13.49×8.99 mm
actual size
Actual size of 5ct Apatite (cushion cut, 10.3×10.3mm, Bluish Green color)   Actual size of 5ct Topaz (oval cut, 13.49×8.99mm, Light 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 5ct Apatite (cushion cut, 10.3×10.3mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Light Blue 5ct Topaz (oval cut, 13.49×8.99mm) 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
61% vs 54%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 5ct Apatite Cushion (10.3×10.3mm, Bluish Green) and 5ct Topaz Oval (13.49×8.99mm, Light 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 Apatite for a given carat weight, because it has higher specific gravity (3.53 vs. 3.2 - this means it's "heavier" compared to Apatite 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.


5 Ct Apatite (Cushion) 5 Ct Topaz (Oval)
10.3×10.3 mm vs 13.49×8.99 mm
95.48 mm²   99.45 mm²
Face-up size outline for 5ct Topaz (13.49×8.99mm, oval cut)
Face-up size outline for 5ct Apatite (10.3×10.3mm, cushion cut)
5ct Apatite Cushion (10.3×10.3mm)
5ct Topaz Oval (13.49×8.99mm)
Difference: 4% (3.97 mm²)
5ct Topaz (Oval, 13.49×8.99mm) has approx. 4% more face-up area than 5ct Apatite (Cushion, 10.3×10.3mm).


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