×
carat vs. color  length*  width*
  ×

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

10ct Ruby (Oval, 16.29×10.86mm, Red) vs 4ct Ruby (Oval, 12×8mm, Red)


Quick summary: When looked from above (face-up position), 10ct Ruby (16.29×10.86mm, oval cut) appears 84% larger than 4ct Ruby (12×8mm, oval cut). See below how they compare side-by-side on a ring and finger.

10ct Ruby (oval cut)
vs
 4ct Ruby (oval cut)
red
 
red
16.29×10.86 mm 12×8 mm
actual size
Actual size of 10ct Ruby (oval cut, 16.29×10.86mm, Red color)   Actual size of 4ct Ruby (oval cut, 12×8mm, Red 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
Red 4ct Ruby (oval cut, 12×8mm) 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 48%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 10ct Ruby Oval (16.29×10.86mm, Red) and 4ct Ruby Oval (12×8mm, 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

The face-up size depends on the shape of the gem, its weight and 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) 4 Ct Ruby (Oval)
16.29×10.86 mm vs 12×8 mm
145.07 mm²   78.72 mm²
Face-up size outline for 10ct Ruby (16.29×10.86mm, oval cut)
Face-up size outline for 4ct Ruby (12×8mm, oval cut)
10ct Ruby Oval (16.29×10.86mm)
4ct Ruby Oval (12×8mm)
Difference: 84% (66.35 mm²)
10ct Ruby (Oval, 16.29×10.86mm) has approx. 84% more face-up area than 4ct Ruby (Oval, 12×8mm).


Popular comparisons: