×
carat vs. color  length*  width*
  ×

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

5ct Tourmaline (Cabochon, 12.8×8.53mm, Purple) vs 5ct Sapphire (Cabochon, 11.7×7.8mm, Blue)


Quick summary: When looked from above (face-up position), 5ct Tourmaline (12.8×8.53mm, cabochon cut) appears 20% larger than 5ct Sapphire (11.7×7.8mm, cabochon cut). See below how they compare side-by-side on a ring and finger.

5ct Tourmaline (cabochon cut)
vs
 5ct Sapphire (cabochon cut)
purple
 
blue
12.8×8.53 mm 11.7×7.8 mm
actual size
Actual size of 5ct Tourmaline (cabochon cut, 12.8×8.53mm, Purple color)   Actual size of 5ct Sapphire (cabochon cut, 11.7×7.8mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Purple 5ct Tourmaline (cabochon cut, 12.8×8.53mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 5ct Sapphire (cabochon cut, 11.7×7.8mm) 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
 51% vs 47%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 5ct Tourmaline Cabochon (12.8×8.53mm, Purple) and 5ct Sapphire Cabochon (11.7×7.8mm, 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 Tourmaline for a given carat weight, because it has higher specific gravity (4 vs. 3.06 - this means it's "heavier" compared to Tourmaline 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.


5 Ct Tourmaline (Cabochon) 5 Ct Sapphire (Cabochon)
12.8×8.53 mm vs 11.7×7.8 mm
89.53 mm²   74.83 mm²
Face-up size outline for 5ct Tourmaline (12.8×8.53mm, cabochon cut)
Face-up size outline for 5ct Sapphire (11.7×7.8mm, cabochon cut)
5ct Tourmaline Cabochon (12.8×8.53mm)
5ct Sapphire Cabochon (11.7×7.8mm)
Difference: 20% (14.7 mm²)
5ct Tourmaline (Cabochon, 12.8×8.53mm) has approx. 20% more face-up area than 5ct Sapphire (Cabochon, 11.7×7.8mm).


Popular comparisons: