×
carat vs. color  length*  width*
  ×

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

1ct Topaz (Princess, 5.6×5.6mm, Blue) vs 1ct Tourmaline (Baguette, 7.55×5.03mm, Violet)


Quick summary: When looked from above (face-up position), 1ct Tourmaline (7.55×5.03mm, baguette cut) appears 21% larger than 1ct Topaz (5.6×5.6mm, princess cut). See below how they compare side-by-side on a ring and finger.

1ct Topaz (princess cut)
vs
1ct Tourmaline (baguette cut)
blue
 
violet
5.6×5.6 mm 7.55×5.03 mm
actual size
Actual size of 1ct Topaz (princess cut, 5.6×5.6mm, Blue color)   Actual size of 1ct Tourmaline (baguette cut, 7.55×5.03mm, Violet color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 1ct Topaz (princess cut, 5.6×5.6mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Violet 1ct Tourmaline (baguette cut, 7.55×5.03mm) 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
34% vs 30%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 1ct Topaz Princess (5.6×5.6mm, Blue) and 1ct Tourmaline Baguette (7.55×5.03mm, Violet) 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, Topaz will face-up smaller than Tourmaline for a given carat weight, because it has higher specific gravity (3.53 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.


1 Ct Topaz (Princess) 1 Ct Tourmaline (Baguette)
5.6×5.6 mm vs 7.55×5.03 mm
31.36 mm²   37.98 mm²
Face-up size outline for 1ct Tourmaline (7.55×5.03mm, baguette cut)
Face-up size outline for 1ct Topaz (5.6×5.6mm, princess cut)
1ct Topaz Princess (5.6×5.6mm)
1ct Tourmaline Baguette (7.55×5.03mm)
Difference: 21% (6.62 mm²)
1ct Tourmaline (Baguette, 7.55×5.03mm) has approx. 21% more face-up area than 1ct Topaz (Princess, 5.6×5.6mm).


Popular comparisons: