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12ct Peridot (Round, 14.54×14.54mm, Yellowish Green) vs 12ct Hiddenite (Round, 14.77×14.77mm, Light Green )


Quick summary: When looked from above (face-up position), 12ct Hiddenite (14.77×14.77mm, round cut) appears 3% larger than 12ct Peridot (14.54×14.54mm, round cut). See below how they compare side-by-side on a ring and finger.

12ct Peridot (round cut)
vs
 12ct Hiddenite (round cut)
yellowish green
 
light green
14.54×14.54 mm 14.77×14.77 mm
actual size
Actual size of 12ct Peridot (round cut, 14.54×14.54mm, Yellowish Green color)   Actual size of 12ct Hiddenite (round cut, 14.77×14.77mm, 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 12ct Peridot (round cut, 14.54×14.54mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Light Green 12ct Hiddenite (round cut, 14.77×14.77mm) 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
 87% vs 88%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 12ct Peridot Round (14.54×14.54mm, Yellowish Green) and 12ct Hiddenite Round (14.77×14.77mm, 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.


12 Ct Peridot (Round) 12 Ct Hiddenite (Round)
14.54×14.54 mm vs 14.77×14.77 mm
166.04 mm²   171.34 mm²
Face-up size outline for 12ct Hiddenite (14.77×14.77mm, round cut)
Face-up size outline for 12ct Peridot (14.54×14.54mm, round cut)
12ct Peridot Round (14.54×14.54mm)
12ct Hiddenite Round (14.77×14.77mm)
Difference: 3% (5.3 mm²)
12ct Hiddenite (Round, 14.77×14.77mm) has approx. 3% more face-up area than 12ct Peridot (Round, 14.54×14.54mm).


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