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4ct Emerald (Oval, 13.85×9.23mm, Green) vs 4ct Tourmaline (Oval, 13.31×8.87mm, Purple)


Quick summary: When looked from above (face-up position), 4ct Emerald (13.85×9.23mm, oval cut) appears 8% larger than 4ct Tourmaline (13.31×8.87mm, oval cut). See below how they compare side-by-side on a ring and finger.

4ct Emerald (oval cut)
vs
 4ct Tourmaline (oval cut)
green
 
purple
13.85×9.23 mm 13.31×8.87 mm
actual size
Actual size of 4ct Emerald (oval cut, 13.85×9.23mm, Green color)   Actual size of 4ct Tourmaline (oval cut, 13.31×8.87mm, Purple color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Green 4ct Emerald (oval cut, 13.85×9.23mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Purple 4ct Tourmaline (oval cut, 13.31×8.87mm) 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
 55% vs 53%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 4ct Emerald Oval (13.85×9.23mm, Green) and 4ct Tourmaline Oval (13.31×8.87mm, 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.


4 Ct Emerald (Oval) 4 Ct Tourmaline (Oval)
13.85×9.23 mm vs 13.31×8.87 mm
104.83 mm²   96.81 mm²
Face-up size outline for 4ct Emerald (13.85×9.23mm, oval cut)
Face-up size outline for 4ct Tourmaline (13.31×8.87mm, oval cut)
4ct Emerald Oval (13.85×9.23mm)
4ct Tourmaline Oval (13.31×8.87mm)
Difference: 8% (8.02 mm²)
4ct Emerald (Oval, 13.85×9.23mm) has approx. 8% more face-up area than 4ct Tourmaline (Oval, 13.31×8.87mm).


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