×
carat vs. color  length*  width*
  ×

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

0.4ct Aquamarine (Round, 5.02×5.02mm, Light Blue) vs 0.5ct Sapphire (Round, 4.75×4.75mm, Dark Purple)


Quick summary: When looked from above (face-up position), 0.4ct Aquamarine (5.02×5.02mm, round cut) appears 12% larger than 0.5ct Sapphire (4.75×4.75mm, round cut). See below how they compare side-by-side on a ring and finger.

0.4ct Aquamarine (round cut)
vs
 0.5ct Sapphire (round cut)
light blue
 
dark purple
5.02×5.02 mm 4.75×4.75 mm
actual size
Actual size of 0.4ct Aquamarine (round cut, 5.02×5.02mm, Light Blue color)   Actual size of 0.5ct Sapphire (round cut, 4.75×4.75mm, Dark Purple color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Light Blue 0.4ct Aquamarine (round cut, 5.02×5.02mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Dark Purple 0.5ct Sapphire (round cut, 4.75×4.75mm) 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
 30% vs 29%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 0.4ct Aquamarine Round (5.02×5.02mm, Light Blue) and 0.5ct Sapphire Round (4.75×4.75mm, Dark Purple) 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.


0.4 Ct Aquamarine (Round) 0.5 Ct Sapphire (Round)
5.02×5.02 mm vs 4.75×4.75 mm
19.79 mm²   17.72 mm²
Face-up size outline for 0.4ct Aquamarine (5.02×5.02mm, round cut)
Face-up size outline for 0.5ct Sapphire (4.75×4.75mm, round cut)
0.4ct Aquamarine Round (5.02×5.02mm)
0.5ct Sapphire Round (4.75×4.75mm)
Difference: 12% (2.07 mm²)
0.4ct Aquamarine (Round, 5.02×5.02mm) has approx. 12% more face-up area than 0.5ct Sapphire (Round, 4.75×4.75mm).


Popular comparisons: