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20ct Peridot (Round, 17.23×17.23mm, Yellowish Green) vs 20ct Hiddenite (Round, 17.52×17.52mm, Light Green )


Quick summary: When looked from above (face-up position), 20ct Hiddenite (17.52×17.52mm, round cut) appears 3% larger than 20ct Peridot (17.23×17.23mm, round cut). See below how they compare side-by-side on a ring and finger.

20ct Peridot (round cut)
vs
 20ct Hiddenite (round cut)
yellowish green
 
light green
17.23×17.23 mm 17.52×17.52 mm
actual size
Actual size of 20ct Peridot (round cut, 17.23×17.23mm, Yellowish Green color)   Actual size of 20ct Hiddenite (round cut, 17.52×17.52mm, Light Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Yellowish Green 20ct Peridot (round cut, 17.23×17.23mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Light Green 20ct Hiddenite (round cut, 17.52×17.52mm) 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
 102% vs 104%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 20ct Peridot Round (17.23×17.23mm, Yellowish Green) and 20ct Hiddenite Round (17.52×17.52mm, Light 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 Hiddenite for a given carat weight, because it has higher specific gravity (3.34 vs. 3.18 - this means it's "heavier" compared to Hiddenite 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.


20 Ct Peridot (Round) 20 Ct Hiddenite (Round)
17.23×17.23 mm vs 17.52×17.52 mm
233.16 mm²   241.08 mm²
Face-up size outline for 20ct Hiddenite (17.52×17.52mm, round cut)
Face-up size outline for 20ct Peridot (17.23×17.23mm, round cut)
20ct Peridot Round (17.23×17.23mm)
20ct Hiddenite Round (17.52×17.52mm)
Difference: 3% (7.92 mm²)
20ct Hiddenite (Round, 17.52×17.52mm) has approx. 3% more face-up area than 20ct Peridot (Round, 17.23×17.23mm).


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