×
carat vs. color  length*  width*
  ×

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

1ct Sapphire (Princess, 5.37×5.37mm, White) vs 0.4ct Emerald (Princess, 4.51×4.51mm, Green)


Quick summary: When looked from above (face-up position), 1ct Sapphire (5.37×5.37mm, princess cut) appears 42% larger than 0.4ct Emerald (4.51×4.51mm, princess cut). See below how they compare side-by-side on a ring and finger.

1ct Sapphire (princess cut)
vs
0.4ct Emerald (princess cut)
white
 
green
5.37×5.37 mm 4.51×4.51 mm
actual size
Actual size of 1ct Sapphire (princess cut, 5.37×5.37mm, White color)   Actual size of 0.4ct Emerald (princess cut, 4.51×4.51mm, Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 1ct Sapphire (princess cut, 5.37×5.37mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Green 0.4ct Emerald (princess cut, 4.51×4.51mm) 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
32% vs 27%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 1ct Sapphire Princess (5.37×5.37mm, White) and 0.4ct Emerald Princess (4.51×4.51mm, Green) 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 Emerald for a given carat weight, because it has higher specific gravity (4 vs. 2.72 - this means it's "heavier" compared to Emerald 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 Sapphire (Princess) 0.4 Ct Emerald (Princess)
5.37×5.37 mm vs 4.51×4.51 mm
28.84 mm²   20.34 mm²
Face-up size outline for 1ct Sapphire (5.37×5.37mm, princess cut)
Face-up size outline for 0.4ct Emerald (4.51×4.51mm, princess cut)
1ct Sapphire Princess (5.37×5.37mm)
0.4ct Emerald Princess (4.51×4.51mm)
Difference: 42% (8.5 mm²)
1ct Sapphire (Princess, 5.37×5.37mm) has approx. 42% more face-up area than 0.4ct Emerald (Princess, 4.51×4.51mm).


Popular comparisons: