×
carat vs. color  length*  width*
  ×

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

6ct Ruby (Oval, 13.74×9.16mm, Red) vs 1ct Alexandrite (Pear, 9×6mm, Bluish Green)


Quick summary: When looked from above (face-up position), 6ct Ruby (13.74×9.16mm, oval cut) appears 2.6 times larger than 1ct Alexandrite (9×6mm, pear cut). See below how they compare side-by-side on a ring and finger.

6ct Ruby (oval cut)
vs
 1ct Alexandrite (pear cut)
red
 
bluish green
13.74×9.16 mm 9×6 mm
actual size
Actual size of 6ct Ruby (oval cut, 13.74×9.16mm, Red color)   Actual size of 1ct Alexandrite (pear cut, 9×6mm, Bluish Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Red 6ct Ruby (oval cut, 13.74×9.16mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Bluish Green 1ct Alexandrite (pear cut, 9×6mm) 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
 55% vs 36%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 6ct Ruby Oval (13.74×9.16mm, Red) and 1ct Alexandrite Pear (9×6mm, Bluish 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, Ruby will face-up smaller than Alexandrite for a given carat weight, because it has higher specific gravity (4 vs. 3.73 - this means it's "heavier" compared to Alexandrite 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.


6 Ct Ruby (Oval) 1 Ct Alexandrite (Pear)
13.74×9.16 mm vs 9×6 mm
103.2 mm²   39.42 mm²
Face-up size outline for 6ct Ruby (13.74×9.16mm, oval cut)
Face-up size outline for 1ct Alexandrite (9×6mm, pear cut)
6ct Ruby Oval (13.74×9.16mm)
1ct Alexandrite Pear (9×6mm)
Difference: 162% (63.78 mm²)
6ct Ruby (Oval, 13.74×9.16mm) has approx. 162% more face-up area than 1ct Alexandrite (Pear, 9×6mm). In other words, it's 2.62x larger.


Popular comparisons: