×
carat vs. color  length*  width*
  ×

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

0.25ct Ruby (Baguette, 4.37×2.91mm, Red) vs 0.25ct Diamond (Baguette, 4.56×3.04mm, White)


Quick summary: When looked from above (face-up position), 0.25ct Diamond (4.56×3.04mm, baguette cut) appears 9% larger than 0.25ct Ruby (4.37×2.91mm, baguette cut). See below how they compare side-by-side on a ring and finger.

0.25ct Ruby (baguette cut)
vs
 0.25ct Diamond (baguette cut)
red
 
white
4.37×2.91 mm 4.56×3.04 mm
actual size
Actual size of 0.25ct Ruby (baguette cut, 4.37×2.91mm, Red color)   Actual size of 0.25ct Diamond (baguette cut, 4.56×3.04mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Red 0.25ct Ruby (baguette cut, 4.37×2.91mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 0.25ct Diamond (baguette cut, 4.56×3.04mm) 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
 18% vs 18%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 0.25ct Ruby Baguette (4.37×2.91mm, Red) and 0.25ct Diamond Baguette (4.56×3.04mm, 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.


0.25 Ct Ruby (Baguette) 0.25 Ct Diamond (Baguette)
4.37×2.91 mm vs 4.56×3.04 mm
12.72 mm²   13.86 mm²
Face-up size outline for 0.25ct Diamond (4.56×3.04mm, baguette cut)
Face-up size outline for 0.25ct Ruby (4.37×2.91mm, baguette cut)
0.25ct Ruby Baguette (4.37×2.91mm)
0.25ct Diamond Baguette (4.56×3.04mm)
Difference: 9% (1.14 mm²)
0.25ct Diamond (Baguette, 4.56×3.04mm) has approx. 9% more face-up area than 0.25ct Ruby (Baguette, 4.37×2.91mm).


Popular comparisons: