×
carat vs. color  length*  width*
  ×

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

3.95ct Sapphire (Oval, 11.96×7.97mm, Blue) vs 3.25ct Diamond (Oval, 12.02×8.01mm, White)


Quick summary: When looked from above (face-up position), 3.25ct Diamond (12.02×8.01mm, oval cut) appears 1% larger than 3.95ct Sapphire (11.96×7.97mm, oval cut). See below how they compare side-by-side on a ring and finger.

3.95ct Sapphire (oval cut)
vs
 3.25ct Diamond (oval cut)
blue
 
white
11.96×7.97 mm 12.02×8.01 mm
actual size
Actual size of 3.95ct Sapphire (oval cut, 11.96×7.97mm, Blue color)   Actual size of 3.25ct Diamond (oval cut, 12.02×8.01mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 3.95ct Sapphire (oval cut, 11.96×7.97mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 3.25ct Diamond (oval cut, 12.02×8.01mm) 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
 48% vs 48%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 3.95ct Sapphire Oval (11.96×7.97mm, Blue) and 3.25ct Diamond Oval (12.02×8.01mm, 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, 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.


3.95 Ct Sapphire (Oval) 3.25 Ct Diamond (Oval)
11.96×7.97 mm vs 12.02×8.01 mm
78.16 mm²   78.95 mm²
Face-up size outline for 3.25ct Diamond (12.02×8.01mm, oval cut)
Face-up size outline for 3.95ct Sapphire (11.96×7.97mm, oval cut)
3.95ct Sapphire Oval (11.96×7.97mm)
3.25ct Diamond Oval (12.02×8.01mm)
Difference: 1% (0.79 mm²)
3.25ct Diamond (Oval, 12.02×8.01mm) has approx. 1% more face-up area than 3.95ct Sapphire (Oval, 11.96×7.97mm).


Popular comparisons: