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1.12ct Peridot (Round, 6.5×6.5mm, Light Green ) vs 1.32ct Alexandrite (Round, 6.73×6.73mm, Bluish Green)


Quick summary: When looked from above (face-up position), 1.32ct Alexandrite (6.73×6.73mm, round cut) appears 7% larger than 1.12ct Peridot (6.5×6.5mm, round cut). See below how they compare side-by-side on a ring and finger.

1.12ct Peridot (round cut)
vs
 1.32ct Alexandrite (round cut)
light green
 
bluish green
6.5×6.5 mm 6.73×6.73 mm
actual size
Actual size of 1.12ct Peridot (round cut, 6.5×6.5mm, Light Green color)   Actual size of 1.32ct Alexandrite (round cut, 6.73×6.73mm, Bluish Green color)
 
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Left finger image
Ring on left finger
Light Green 1.12ct Peridot (round cut, 6.5×6.5mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Bluish Green 1.32ct Alexandrite (round cut, 6.73×6.73mm) 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
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Ring diameter: 16.9 mm
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Actual sizes of 1.12ct Peridot Round (6.5×6.5mm, Light Green ) and 1.32ct Alexandrite Round (6.73×6.73mm, Bluish 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, Alexandrite will face-up smaller than Peridot for a given carat weight, because it has higher specific gravity (3.7 vs. 3.35 - this means it's "heavier" compared to Peridot 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.


1.12 Ct Peridot (Round) 1.32 Ct Alexandrite (Round)
6.5×6.5 mm vs 6.73×6.73 mm
33.18 mm²   35.57 mm²
Face-up size outline for 1.32ct Alexandrite (6.73×6.73mm, round cut)
Face-up size outline for 1.12ct Peridot (6.5×6.5mm, round cut)
1.12ct Peridot Round (6.5×6.5mm)
1.32ct Alexandrite Round (6.73×6.73mm)
Difference: 7% (2.39 mm²)
1.32ct Alexandrite Round (6.73×6.73mm) has approx. 7% more face-up area than 1.12ct Peridot Round (6.5×6.5mm).


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