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18ct Apatite (Marquise, 27.44×13.72mm, Green) vs 18ct Peridot (Marquise, 27.06×13.53mm, Yellowish Green)


Quick summary: When looked from above (face-up position), 18ct Apatite (27.44×13.72mm, marquise cut) appears 3% larger than 18ct Peridot (27.06×13.53mm, marquise cut). See below how they compare side-by-side on a ring and finger.

18ct Apatite (marquise cut)
vs
 18ct Peridot (marquise cut)
green
 
yellowish green
27.44×13.72 mm 27.06×13.53 mm
actual size
Actual size of 18ct Apatite (marquise cut, 27.44×13.72mm, Green color)   Actual size of 18ct Peridot (marquise cut, 27.06×13.53mm, 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 18ct Apatite (marquise cut, 27.44×13.72mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Yellowish Green 18ct Peridot (marquise cut, 27.06×13.53mm) 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
 82% vs 81%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 18ct Apatite Marquise (27.44×13.72mm, Green) and 18ct Peridot Marquise (27.06×13.53mm, 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.


18 Ct Apatite (Marquise) 18 Ct Peridot (Marquise)
27.44×13.72 mm vs 27.06×13.53 mm
267.3 mm²   259.95 mm²
Face-up size outline for 18ct Apatite (27.44×13.72mm, marquise cut)
Face-up size outline for 18ct Peridot (27.06×13.53mm, marquise cut)
18ct Apatite Marquise (27.44×13.72mm)
18ct Peridot Marquise (27.06×13.53mm)
Difference: 3% (7.35 mm²)
18ct Apatite (Marquise, 27.44×13.72mm) has approx. 3% more face-up area than 18ct Peridot (Marquise, 27.06×13.53mm).


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