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5.5ct Peridot (Marquise, 18.48×9.24mm, Yellowish Green) vs 4ct Aquamarine (Princess, 9.73×9.73mm, Light Blue)


Quick summary: When looked from above (face-up position), 5.5ct Peridot (18.48×9.24mm, marquise cut) appears 28% larger than 4ct Aquamarine (9.73×9.73mm, princess cut). See below how they compare side-by-side on a ring and finger.

5.5ct Peridot (marquise cut)
vs
 4ct Aquamarine (princess cut)
yellowish green
 
light blue
18.48×9.24 mm 9.73×9.73 mm
actual size
Actual size of 5.5ct Peridot (marquise cut, 18.48×9.24mm, Yellowish Green color)   Actual size of 4ct Aquamarine (princess cut, 9.73×9.73mm, Light Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Yellowish Green 5.5ct Peridot (marquise cut, 18.48×9.24mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Light Blue 4ct Aquamarine (princess cut, 9.73×9.73mm) 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
 55% vs 58%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 5.5ct Peridot Marquise (18.48×9.24mm, Yellowish Green) and 4ct Aquamarine Princess (9.73×9.73mm, Light Blue) 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 Aquamarine for a given carat weight, because it has higher specific gravity (3.34 vs. 2.72 - this means it's "heavier" compared to Aquamarine 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.


5.5 Ct Peridot (Marquise) 4 Ct Aquamarine (Princess)
18.48×9.24 mm vs 9.73×9.73 mm
121.24 mm²   94.67 mm²
Face-up size outline for 5.5ct Peridot (18.48×9.24mm, marquise cut)
Face-up size outline for 4ct Aquamarine (9.73×9.73mm, princess cut)
5.5ct Peridot Marquise (18.48×9.24mm)
4ct Aquamarine Princess (9.73×9.73mm)
Difference: 28% (26.57 mm²)
5.5ct Peridot (Marquise, 18.48×9.24mm) has approx. 28% more face-up area than 4ct Aquamarine (Princess, 9.73×9.73mm).


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