×
carat vs. color  length*  width*
  ×

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

12ct Emerald (Oval, 19.74×13.16mm, Green) vs 2ct Ruby (Oval, 9.53×6.35mm, Red)


Quick summary: When looked from above (face-up position), 12ct Emerald (19.74×13.16mm, oval cut) appears 4.3 times larger than 2ct Ruby (9.53×6.35mm, oval cut). See below how they compare side-by-side on a ring and finger.

12ct Emerald (oval cut)
vs
 2ct Ruby (oval cut)
green
 
red
19.74×13.16 mm 9.53×6.35 mm
actual size
Actual size of 12ct Emerald (oval cut, 19.74×13.16mm, Green color)   Actual size of 2ct Ruby (oval cut, 9.53×6.35mm, Red color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Green 12ct Emerald (oval cut, 19.74×13.16mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Red 2ct Ruby (oval cut, 9.53×6.35mm) 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
 78% vs 38%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 12ct Emerald Oval (19.74×13.16mm, Green) and 2ct Ruby Oval (9.53×6.35mm, Red) 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 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.


12 Ct Emerald (Oval) 2 Ct Ruby (Oval)
19.74×13.16 mm vs 9.53×6.35 mm
213.02 mm²   49.62 mm²
Face-up size outline for 12ct Emerald (19.74×13.16mm, oval cut)
Face-up size outline for 2ct Ruby (9.53×6.35mm, oval cut)
12ct Emerald Oval (19.74×13.16mm)
2ct Ruby Oval (9.53×6.35mm)
Difference: 329% (163.4 mm²)
12ct Emerald (Oval, 19.74×13.16mm) has approx. 329% more face-up area than 2ct Ruby (Oval, 9.53×6.35mm). In other words, it's 4.29x larger.


Popular comparisons: