×
carat vs. color  length*  width*
  ×

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

0.5ct Diamond (Cushion, 4.62×4.62mm, White) vs 1.29ct Sapphire (Cushion, 6.34×5.56mm, Blue)


Quick summary: When looked from above (face-up position), 1.29ct Sapphire (6.34×5.56mm, cushion cut) appears 65% larger than 0.5ct Diamond (4.62×4.62mm, cushion cut). See below how they compare side-by-side on a ring and finger.

0.5ct Diamond (cushion cut)
vs
1.29ct Sapphire (cushion cut)
white
 
blue
4.62×4.62 mm 6.34×5.56 mm
actual size
Actual size of 0.5ct Diamond (cushion cut, 4.62×4.62mm, White color)   Actual size of 1.29ct Sapphire (cushion cut, 6.34×5.56mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 0.5ct Diamond (cushion cut, 4.62×4.62mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 1.29ct Sapphire (cushion cut, 6.34×5.56mm) 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
28% vs 33%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 0.5ct Diamond Cushion (4.62×4.62mm, White) and 1.29ct Sapphire Cushion (6.34×5.56mm, Blue) 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, Sapphire 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.


0.5 Ct Diamond (Cushion) 1.29 Ct Sapphire (Cushion)
4.62×4.62 mm vs 6.34×5.56 mm
19.21 mm²   31.73 mm²
Face-up size outline for 1.29ct Sapphire (6.34×5.56mm, cushion cut)
Face-up size outline for 0.5ct Diamond (4.62×4.62mm, cushion cut)
0.5ct Diamond Cushion (4.62×4.62mm)
1.29ct Sapphire Cushion (6.34×5.56mm)
Difference: 65% (12.52 mm²)
1.29ct Sapphire (Cushion, 6.34×5.56mm) has approx. 65% more face-up area than 0.5ct Diamond (Cushion, 4.62×4.62mm).


Popular comparisons: