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16ct Apatite (Cabochon, 18.57×12.38mm, Green) vs 16ct Peridot (Cabochon, 18.32×12.21mm, Yellowish Green)


Quick summary: When looked from above (face-up position), 16ct Apatite (18.57×12.38mm, cabochon cut) appears 3% larger than 16ct Peridot (18.32×12.21mm, cabochon cut). See below how they compare side-by-side on a ring and finger.

16ct Apatite (cabochon cut)
vs
 16ct Peridot (cabochon cut)
green
 
yellowish green
18.57×12.38 mm 18.32×12.21 mm
actual size
Actual size of 16ct Apatite (cabochon cut, 18.57×12.38mm, Green color)   Actual size of 16ct Peridot (cabochon cut, 18.32×12.21mm, 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 16ct Apatite (cabochon cut, 18.57×12.38mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Yellowish Green 16ct Peridot (cabochon cut, 18.32×12.21mm) 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
 74% vs 73%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 16ct Apatite Cabochon (18.57×12.38mm, Green) and 16ct Peridot Cabochon (18.32×12.21mm, 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.


16 Ct Apatite (Cabochon) 16 Ct Peridot (Cabochon)
18.57×12.38 mm vs 18.32×12.21 mm
188.52 mm²   183.42 mm²
Face-up size outline for 16ct Apatite (18.57×12.38mm, cabochon cut)
Face-up size outline for 16ct Peridot (18.32×12.21mm, cabochon cut)
16ct Apatite Cabochon (18.57×12.38mm)
16ct Peridot Cabochon (18.32×12.21mm)
Difference: 3% (5.1 mm²)
16ct Apatite (Cabochon, 18.57×12.38mm) has approx. 3% more face-up area than 16ct Peridot (Cabochon, 18.32×12.21mm).


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