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4ct Aquamarine (Trillion, 13.2×13.2mm, Light Blue) vs 4ct Sapphire (Trillion, 11.6×11.6mm, Blue)


Quick summary: When looked from above (face-up position), 4ct Aquamarine (13.2×13.2mm, trillion cut) appears 29% larger than 4ct Sapphire (11.6×11.6mm, trillion cut). See below how they compare side-by-side on a ring and finger.

4ct Aquamarine (trillion cut)
vs
 4ct Sapphire (trillion cut)
light blue
 
blue
13.2×13.2 mm 11.6×11.6 mm
actual size
Actual size of 4ct Aquamarine (trillion cut, 13.2×13.2mm, Light Blue color)   Actual size of 4ct Sapphire (trillion cut, 11.6×11.6mm, 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 4ct Aquamarine (trillion cut, 13.2×13.2mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 4ct Sapphire (trillion cut, 11.6×11.6mm) 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
 79% vs 69%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 4ct Aquamarine Trillion (13.2×13.2mm, Light Blue) and 4ct Sapphire Trillion (11.6×11.6mm, 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.


4 Ct Aquamarine (Trillion) 4 Ct Sapphire (Trillion)
13.2×13.2 mm vs 11.6×11.6 mm
108.03 mm²   83.43 mm²
Face-up size outline for 4ct Aquamarine (13.2×13.2mm, trillion cut)
Face-up size outline for 4ct Sapphire (11.6×11.6mm, trillion cut)
4ct Aquamarine Trillion (13.2×13.2mm)
4ct Sapphire Trillion (11.6×11.6mm)
Difference: 29% (24.6 mm²)
4ct Aquamarine (Trillion, 13.2×13.2mm) has approx. 29% more face-up area than 4ct Sapphire (Trillion, 11.6×11.6mm).


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