×
carat vs. color  length*  width*
  ×

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

2.7ct Tourmaline (Trillion, 10.66×10.66mm, Violet) vs 3ct Ruby (Emerald, 9×7mm, Red)


Quick summary: When looked from above (face-up position), 2.7ct Tourmaline (10.66×10.66mm, trillion cut) appears 20% larger than 3ct Ruby (9×7mm, emerald cut). See below how they compare side-by-side on a ring and finger.

2.7ct Tourmaline (trillion cut)
vs
 3ct Ruby (emerald cut)
violet
 
red
10.66×10.66 mm 9×7 mm
actual size
Actual size of 2.7ct Tourmaline (trillion cut, 10.66×10.66mm, Violet color)   Actual size of 3ct Ruby (emerald cut, 9×7mm, Red color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Violet 2.7ct Tourmaline (trillion cut, 10.66×10.66mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Red 3ct Ruby (emerald cut, 9×7mm) 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
 64% vs 42%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 2.7ct Tourmaline Trillion (10.66×10.66mm, Violet) and 3ct Ruby Emerald (9×7mm, Red) 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, Ruby 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.


2.7 Ct Tourmaline (Trillion) 3 Ct Ruby (Emerald)
10.66×10.66 mm vs 9×7 mm
70.45 mm²   58.59 mm²
Face-up size outline for 2.7ct Tourmaline (10.66×10.66mm, trillion cut)
Face-up size outline for 3ct Ruby (9×7mm, emerald cut)
2.7ct Tourmaline Trillion (10.66×10.66mm)
3ct Ruby Emerald (9×7mm)
Difference: 20% (11.86 mm²)
2.7ct Tourmaline (Trillion, 10.66×10.66mm) has approx. 20% more face-up area than 3ct Ruby (Emerald, 9×7mm).


Popular comparisons: