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19ct Apatite (Trillion, 21.01×21.01mm, Green) vs 19ct Peridot (Trillion, 20.71×20.71mm, Yellowish Green)


Quick summary: When looked from above (face-up position), 19ct Apatite (21.01×21.01mm, trillion cut) appears 3% larger than 19ct Peridot (20.71×20.71mm, trillion cut). See below how they compare side-by-side on a ring and finger.

19ct Apatite (trillion cut)
vs
 19ct Peridot (trillion cut)
green
 
yellowish green
21.01×21.01 mm 20.71×20.71 mm
actual size
Actual size of 19ct Apatite (trillion cut, 21.01×21.01mm, Green color)   Actual size of 19ct Peridot (trillion cut, 20.71×20.71mm, 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 19ct Apatite (trillion cut, 21.01×21.01mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Yellowish Green 19ct Peridot (trillion cut, 20.71×20.71mm) 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
 125% vs 123%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 19ct Apatite Trillion (21.01×21.01mm, Green) and 19ct Peridot Trillion (20.71×20.71mm, 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.


19 Ct Apatite (Trillion) 19 Ct Peridot (Trillion)
21.01×21.01 mm vs 20.71×20.71 mm
273.68 mm²   265.92 mm²
Face-up size outline for 19ct Apatite (21.01×21.01mm, trillion cut)
Face-up size outline for 19ct Peridot (20.71×20.71mm, trillion cut)
19ct Apatite Trillion (21.01×21.01mm)
19ct Peridot Trillion (20.71×20.71mm)
Difference: 3% (7.76 mm²)
19ct Apatite (Trillion, 21.01×21.01mm) has approx. 3% more face-up area than 19ct Peridot (Trillion, 20.71×20.71mm).


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