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40ct Apatite (Cabochon, 25.22×16.81mm, Green) vs 40ct Peridot (Cabochon, 24.86×16.57mm, Yellowish Green)


Quick summary: When looked from above (face-up position), 40ct Apatite (25.22×16.81mm, cabochon cut) appears 3% larger than 40ct Peridot (24.86×16.57mm, cabochon cut). See below how they compare side-by-side on a ring and finger.

40ct Apatite (cabochon cut)
vs
 40ct Peridot (cabochon cut)
green
 
yellowish green
25.22×16.81 mm 24.86×16.57 mm
actual size
Actual size of 40ct Apatite (cabochon cut, 25.22×16.81mm, Green color)   Actual size of 40ct Peridot (cabochon cut, 24.86×16.57mm, Yellowish Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Green 40ct Apatite (cabochon cut, 25.22×16.81mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Yellowish Green 40ct Peridot (cabochon cut, 24.86×16.57mm) 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
 100% vs 99%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 40ct Apatite Cabochon (25.22×16.81mm, Green) and 40ct Peridot Cabochon (24.86×16.57mm, Yellowish Green) 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, Peridot will face-up smaller than Apatite for a given carat weight, because it has higher specific gravity (3.34 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.


40 Ct Apatite (Cabochon) 40 Ct Peridot (Cabochon)
25.22×16.81 mm vs 24.86×16.57 mm
347.64 mm²   337.78 mm²
Face-up size outline for 40ct Apatite (25.22×16.81mm, cabochon cut)
Face-up size outline for 40ct Peridot (24.86×16.57mm, cabochon cut)
40ct Apatite Cabochon (25.22×16.81mm)
40ct Peridot Cabochon (24.86×16.57mm)
Difference: 3% (9.86 mm²)
40ct Apatite (Cabochon, 25.22×16.81mm) has approx. 3% more face-up area than 40ct Peridot (Cabochon, 24.86×16.57mm).


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