×
carat vs. color  length*  width*
  ×

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

3.5ct Sapphire (Oval, 11.49×7.66mm, Blue) vs 2.7ct Tanzanite (Oval, 11.24×7.49mm, Blue)


Quick summary: When looked from above (face-up position), 3.5ct Sapphire (11.49×7.66mm, oval cut) appears 5% larger than 2.7ct Tanzanite (11.24×7.49mm, oval cut). See below how they compare side-by-side on a ring and finger.

3.5ct Sapphire (oval cut)
vs
 2.7ct Tanzanite (oval cut)
blue
 
blue
11.49×7.66 mm 11.24×7.49 mm
actual size
Actual size of 3.5ct Sapphire (oval cut, 11.49×7.66mm, Blue color)   Actual size of 2.7ct Tanzanite (oval cut, 11.24×7.49mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 3.5ct Sapphire (oval cut, 11.49×7.66mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 2.7ct Tanzanite (oval cut, 11.24×7.49mm) 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
 46% vs 45%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 3.5ct Sapphire Oval (11.49×7.66mm, Blue) and 2.7ct Tanzanite Oval (11.24×7.49mm, 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 Tanzanite for a given carat weight, because it has higher specific gravity (4 vs. 3.35 - this means it's "heavier" compared to Tanzanite 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.


3.5 Ct Sapphire (Oval) 2.7 Ct Tanzanite (Oval)
11.49×7.66 mm vs 11.24×7.49 mm
72.17 mm²   69.03 mm²
Face-up size outline for 3.5ct Sapphire (11.49×7.66mm, oval cut)
Face-up size outline for 2.7ct Tanzanite (11.24×7.49mm, oval cut)
3.5ct Sapphire Oval (11.49×7.66mm)
2.7ct Tanzanite Oval (11.24×7.49mm)
Difference: 5% (3.14 mm²)
3.5ct Sapphire (Oval, 11.49×7.66mm) has approx. 5% more face-up area than 2.7ct Tanzanite (Oval, 11.24×7.49mm).


Popular comparisons: