×
carat vs. color  length*  width*
  ×

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

7ct Emerald (Marquise, 21.16×10.58mm, Green) vs 7ct Tourmaline (Marquise, 20.34×10.17mm, Purple)


Quick summary: When looked from above (face-up position), 7ct Emerald (21.16×10.58mm, marquise cut) appears 8% larger than 7ct Tourmaline (20.34×10.17mm, marquise cut). See below how they compare side-by-side on a ring and finger.

7ct Emerald (marquise cut)
vs
 7ct Tourmaline (marquise cut)
green
 
purple
21.16×10.58 mm 20.34×10.17 mm
actual size
Actual size of 7ct Emerald (marquise cut, 21.16×10.58mm, Green color)   Actual size of 7ct Tourmaline (marquise cut, 20.34×10.17mm, Purple color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Green 7ct Emerald (marquise cut, 21.16×10.58mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Purple 7ct Tourmaline (marquise cut, 20.34×10.17mm) 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
 63% vs 61%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 7ct Emerald Marquise (21.16×10.58mm, Green) and 7ct Tourmaline Marquise (20.34×10.17mm, Purple) 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, Tourmaline will face-up smaller than Emerald for a given carat weight, because it has higher specific gravity (3.06 vs. 2.72 - this means it's "heavier" compared to Emerald 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.


7 Ct Emerald (Marquise) 7 Ct Tourmaline (Marquise)
21.16×10.58 mm vs 20.34×10.17 mm
158.95 mm²   146.87 mm²
Face-up size outline for 7ct Emerald (21.16×10.58mm, marquise cut)
Face-up size outline for 7ct Tourmaline (20.34×10.17mm, marquise cut)
7ct Emerald Marquise (21.16×10.58mm)
7ct Tourmaline Marquise (20.34×10.17mm)
Difference: 8% (12.08 mm²)
7ct Emerald (Marquise, 21.16×10.58mm) has approx. 8% more face-up area than 7ct Tourmaline (Marquise, 20.34×10.17mm).


Popular comparisons: