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30ct Apatite (Round, 20.01×20.01mm, Green) vs 30ct Peridot (Round, 19.73×19.73mm, Yellowish Green)


Quick summary: When looked from above (face-up position), 30ct Apatite (20.01×20.01mm, round cut) appears 3% larger than 30ct Peridot (19.73×19.73mm, round cut). See below how they compare side-by-side on a ring and finger.

30ct Apatite (round cut)
vs
 30ct Peridot (round cut)
green
 
yellowish green
20.01×20.01 mm 19.73×19.73 mm
actual size
Actual size of 30ct Apatite (round cut, 20.01×20.01mm, Green color)   Actual size of 30ct Peridot (round cut, 19.73×19.73mm, 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 30ct Apatite (round cut, 20.01×20.01mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Yellowish Green 30ct Peridot (round cut, 19.73×19.73mm) 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
 119% vs 117%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 30ct Apatite Round (20.01×20.01mm, Green) and 30ct Peridot Round (19.73×19.73mm, 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.


30 Ct Apatite (Round) 30 Ct Peridot (Round)
20.01×20.01 mm vs 19.73×19.73 mm
314.47 mm²   305.73 mm²
Face-up size outline for 30ct Apatite (20.01×20.01mm, round cut)
Face-up size outline for 30ct Peridot (19.73×19.73mm, round cut)
30ct Apatite Round (20.01×20.01mm)
30ct Peridot Round (19.73×19.73mm)
Difference: 3% (8.74 mm²)
30ct Apatite (Round, 20.01×20.01mm) has approx. 3% more face-up area than 30ct Peridot (Round, 19.73×19.73mm).


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