×
carat vs. color  length*  width*
  ×

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

10ct Ruby (Oval, 16.29×10.86mm, Red) vs 10ct Emerald (Oval, 18.57×12.38mm, Green)


Quick summary: When looked from above (face-up position), 10ct Emerald (18.57×12.38mm, oval cut) appears 30% larger than 10ct Ruby (16.29×10.86mm, oval cut). See below how they compare side-by-side on a ring and finger.

10ct Ruby (oval cut)
vs
 10ct Emerald (oval cut)
red
 
green
16.29×10.86 mm 18.57×12.38 mm
actual size
Actual size of 10ct Ruby (oval cut, 16.29×10.86mm, Red color)   Actual size of 10ct Emerald (oval cut, 18.57×12.38mm, Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Red 10ct Ruby (oval cut, 16.29×10.86mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Green 10ct Emerald (oval cut, 18.57×12.38mm) 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
 65% vs 74%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 10ct Ruby Oval (16.29×10.86mm, Red) and 10ct Emerald Oval (18.57×12.38mm, 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 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.


10 Ct Ruby (Oval) 10 Ct Emerald (Oval)
16.29×10.86 mm vs 18.57×12.38 mm
145.07 mm²   188.52 mm²
Face-up size outline for 10ct Emerald (18.57×12.38mm, oval cut)
Face-up size outline for 10ct Ruby (16.29×10.86mm, oval cut)
10ct Ruby Oval (16.29×10.86mm)
10ct Emerald Oval (18.57×12.38mm)
Difference: 30% (43.45 mm²)
10ct Emerald (Oval, 18.57×12.38mm) has approx. 30% more face-up area than 10ct Ruby (Oval, 16.29×10.86mm).


Popular comparisons: