×
carat vs. color  length*  width*
  ×

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

9ct Sapphire (Radiant, 11.46×11.46mm, Blue) vs 9ct Topaz (Radiant, 11.95×11.95mm, Blue)


Quick summary: When looked from above (face-up position), 9ct Topaz (11.95×11.95mm, radiant cut) appears 9% larger than 9ct Sapphire (11.46×11.46mm, radiant cut). See below how they compare side-by-side on a ring and finger.

9ct Sapphire (radiant cut)
vs
 9ct Topaz (radiant cut)
blue
 
blue
11.46×11.46 mm 11.95×11.95 mm
actual size
Actual size of 9ct Sapphire (radiant cut, 11.46×11.46mm, Blue color)   Actual size of 9ct Topaz (radiant cut, 11.95×11.95mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 9ct Sapphire (radiant cut, 11.46×11.46mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 9ct Topaz (radiant cut, 11.95×11.95mm) 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
 68% vs 71%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 9ct Sapphire Radiant (11.46×11.46mm, Blue) and 9ct Topaz Radiant (11.95×11.95mm, 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 Topaz for a given carat weight, because it has higher specific gravity (4 vs. 3.53 - this means it's "heavier" compared to Topaz 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.


9 Ct Sapphire (Radiant) 9 Ct Topaz (Radiant)
11.46×11.46 mm vs 11.95×11.95 mm
124.77 mm²   135.66 mm²
Face-up size outline for 9ct Topaz (11.95×11.95mm, radiant cut)
Face-up size outline for 9ct Sapphire (11.46×11.46mm, radiant cut)
9ct Sapphire Radiant (11.46×11.46mm)
9ct Topaz Radiant (11.95×11.95mm)
Difference: 9% (10.89 mm²)
9ct Topaz (Radiant, 11.95×11.95mm) has approx. 9% more face-up area than 9ct Sapphire (Radiant, 11.46×11.46mm).


Popular comparisons: