×
carat vs. color  length*  width*
  ×

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

4.5ct Emerald (Princess, 9.86×9.86mm, Green) vs 4.5ct Tourmaline (Princess, 9.48×9.48mm, Purple)


Quick summary: When looked from above (face-up position), 4.5ct Emerald (9.86×9.86mm, princess cut) appears 8% larger than 4.5ct Tourmaline (9.48×9.48mm, princess cut). See below how they compare side-by-side on a ring and finger.

4.5ct Emerald (princess cut)
vs
4.5ct Tourmaline (princess cut)
green
 
purple
9.86×9.86 mm 9.48×9.48 mm
actual size
Actual size of 4.5ct Emerald (princess cut, 9.86×9.86mm, Green color)   Actual size of 4.5ct Tourmaline (princess cut, 9.48×9.48mm, Purple color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Green 4.5ct Emerald (princess cut, 9.86×9.86mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Purple 4.5ct Tourmaline (princess cut, 9.48×9.48mm) 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
59% vs 57%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 4.5ct Emerald Princess (9.86×9.86mm, Green) and 4.5ct Tourmaline Princess (9.48×9.48mm, 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, Tourmaline will face-up smaller than Emerald for a given carat weight, because it has higher specific gravity (3.06 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.


4.5 Ct Emerald (Princess) 4.5 Ct Tourmaline (Princess)
9.86×9.86 mm vs 9.48×9.48 mm
97.22 mm²   89.87 mm²
Face-up size outline for 4.5ct Emerald (9.86×9.86mm, princess cut)
Face-up size outline for 4.5ct Tourmaline (9.48×9.48mm, princess cut)
4.5ct Emerald Princess (9.86×9.86mm)
4.5ct Tourmaline Princess (9.48×9.48mm)
Difference: 8% (7.35 mm²)
4.5ct Emerald (Princess, 9.86×9.86mm) has approx. 8% more face-up area than 4.5ct Tourmaline (Princess, 9.48×9.48mm).


Popular comparisons: