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8ct Emerald (Oval, 17.45×11.63mm, Green) vs 8ct Tourmaline (Oval, 16.77×11.18mm, Purple)


Quick summary: When looked from above (face-up position), 8ct Emerald (17.45×11.63mm, oval cut) appears 8% larger than 8ct Tourmaline (16.77×11.18mm, oval cut). See below how they compare side-by-side on a ring and finger.

8ct Emerald (oval cut)
vs
 8ct Tourmaline (oval cut)
green
 
purple
17.45×11.63 mm 16.77×11.18 mm
actual size
Actual size of 8ct Emerald (oval cut, 17.45×11.63mm, Green color)   Actual size of 8ct Tourmaline (oval cut, 16.77×11.18mm, Purple color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Green 8ct Emerald (oval cut, 17.45×11.63mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Purple 8ct Tourmaline (oval cut, 16.77×11.18mm) 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
 69% vs 67%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 8ct Emerald Oval (17.45×11.63mm, Green) and 8ct Tourmaline Oval (16.77×11.18mm, 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.


8 Ct Emerald (Oval) 8 Ct Tourmaline (Oval)
17.45×11.63 mm vs 16.77×11.18 mm
166.41 mm²   153.74 mm²
Face-up size outline for 8ct Emerald (17.45×11.63mm, oval cut)
Face-up size outline for 8ct Tourmaline (16.77×11.18mm, oval cut)
8ct Emerald Oval (17.45×11.63mm)
8ct Tourmaline Oval (16.77×11.18mm)
Difference: 8% (12.67 mm²)
8ct Emerald (Oval, 17.45×11.63mm) has approx. 8% more face-up area than 8ct Tourmaline (Oval, 16.77×11.18mm).


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