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6ct Aquamarine (Marquise, 20.1×10.05mm, Light Blue) vs 6ct Sapphire (Marquise, 17.66×8.83mm, Blue)


Quick summary: When looked from above (face-up position), 6ct Aquamarine (20.1×10.05mm, marquise cut) appears 30% larger than 6ct Sapphire (17.66×8.83mm, marquise cut). See below how they compare side-by-side on a ring and finger.

6ct Aquamarine (marquise cut)
vs
 6ct Sapphire (marquise cut)
light blue
 
blue
20.1×10.05 mm 17.66×8.83 mm
actual size
Actual size of 6ct Aquamarine (marquise cut, 20.1×10.05mm, Light Blue color)   Actual size of 6ct Sapphire (marquise cut, 17.66×8.83mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Light Blue 6ct Aquamarine (marquise cut, 20.1×10.05mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 6ct Sapphire (marquise cut, 17.66×8.83mm) 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
 60% vs 53%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 6ct Aquamarine Marquise (20.1×10.05mm, Light Blue) and 6ct Sapphire Marquise (17.66×8.83mm, 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, Sapphire will face-up smaller than Aquamarine for a given carat weight, because it has higher specific gravity (4 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.


6 Ct Aquamarine (Marquise) 6 Ct Sapphire (Marquise)
20.1×10.05 mm vs 17.66×8.83 mm
143.42 mm²   110.72 mm²
Face-up size outline for 6ct Aquamarine (20.1×10.05mm, marquise cut)
Face-up size outline for 6ct Sapphire (17.66×8.83mm, marquise cut)
6ct Aquamarine Marquise (20.1×10.05mm)
6ct Sapphire Marquise (17.66×8.83mm)
Difference: 30% (32.7 mm²)
6ct Aquamarine (Marquise, 20.1×10.05mm) has approx. 30% more face-up area than 6ct Sapphire (Marquise, 17.66×8.83mm).


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