×
carat vs. color  length*  width*
  ×

(or examine a )
* size in mm (optional)

1ct Aquamarine (Marquise, 11.26×5.63mm, Light Blue) vs 4ct Sapphire (Round, 9.49×9.49mm, Blue)


Quick summary: When looked from above (face-up position), 4ct Sapphire (9.49×9.49mm, round cut) appears 57% larger than 1ct Aquamarine (11.26×5.63mm, marquise cut). See below how they compare side-by-side on a ring and finger.

1ct Aquamarine (marquise cut)
vs
 4ct Sapphire (round cut)
light blue
 
blue
11.26×5.63 mm 9.49×9.49 mm
actual size
Actual size of 1ct Aquamarine (marquise cut, 11.26×5.63mm, Light Blue color)   Actual size of 4ct Sapphire (round cut, 9.49×9.49mm, 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 1ct Aquamarine (marquise cut, 11.26×5.63mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 4ct Sapphire (round cut, 9.49×9.49mm) 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
 34% vs 57%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 1ct Aquamarine Marquise (11.26×5.63mm, Light Blue) and 4ct Sapphire Round (9.49×9.49mm, 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.


1 Ct Aquamarine (Marquise) 4 Ct Sapphire (Round)
11.26×5.63 mm vs 9.49×9.49 mm
45.01 mm²   70.73 mm²
Face-up size outline for 4ct Sapphire (9.49×9.49mm, round cut)
Face-up size outline for 1ct Aquamarine (11.26×5.63mm, marquise cut)
1ct Aquamarine Marquise (11.26×5.63mm)
4ct Sapphire Round (9.49×9.49mm)
Difference: 57% (25.72 mm²)
4ct Sapphire (Round, 9.49×9.49mm) has approx. 57% more face-up area than 1ct Aquamarine (Marquise, 11.26×5.63mm).


Popular comparisons: