×
carat vs. color  length*  width*
  ×

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

2.75ct Ruby (Oval, 10.59×7.06mm, Red) vs 6.25ct Diamond (Round, 11.97×11.97mm, White)


Quick summary: When looked from above (face-up position), 6.25ct Diamond (11.97×11.97mm, round cut) appears 84% larger than 2.75ct Ruby (10.59×7.06mm, oval cut). See below how they compare side-by-side on a ring and finger.

2.75ct Ruby (oval cut)
vs
 6.25ct Diamond (round cut)
red
 
white
10.59×7.06 mm 11.97×11.97 mm
actual size
Actual size of 2.75ct Ruby (oval cut, 10.59×7.06mm, Red color)   Actual size of 6.25ct Diamond (round cut, 11.97×11.97mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Red 2.75ct Ruby (oval cut, 10.59×7.06mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 6.25ct Diamond (round cut, 11.97×11.97mm) 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
 42% vs 71%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 2.75ct Ruby Oval (10.59×7.06mm, Red) and 6.25ct Diamond Round (11.97×11.97mm, White) 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 Diamond for a given carat weight, because it has higher specific gravity (4 vs. 3.52 - this means it's "heavier" compared to Diamond 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.


2.75 Ct Ruby (Oval) 6.25 Ct Diamond (Round)
10.59×7.06 mm vs 11.97×11.97 mm
61.31 mm²   112.53 mm²
Face-up size outline for 6.25ct Diamond (11.97×11.97mm, round cut)
Face-up size outline for 2.75ct Ruby (10.59×7.06mm, oval cut)
2.75ct Ruby Oval (10.59×7.06mm)
6.25ct Diamond Round (11.97×11.97mm)
Difference: 84% (51.22 mm²)
6.25ct Diamond (Round, 11.97×11.97mm) has approx. 84% more face-up area than 2.75ct Ruby (Oval, 10.59×7.06mm).


Popular comparisons: