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9ct Emerald (Cabochon, 16.19×10.79mm, Green) vs 9ct Tourmaline (Cabochon, 15.57×10.38mm, Purple)


Quick summary: When looked from above (face-up position), 9ct Emerald (16.19×10.79mm, cabochon cut) appears 8% larger than 9ct Tourmaline (15.57×10.38mm, cabochon cut). See below how they compare side-by-side on a ring and finger.

9ct Emerald (cabochon cut)
vs
 9ct Tourmaline (cabochon cut)
green
 
purple
16.19×10.79 mm 15.57×10.38 mm
actual size
Actual size of 9ct Emerald (cabochon cut, 16.19×10.79mm, Green color)   Actual size of 9ct Tourmaline (cabochon cut, 15.57×10.38mm, Purple color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Green 9ct Emerald (cabochon cut, 16.19×10.79mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Purple 9ct Tourmaline (cabochon cut, 15.57×10.38mm) 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 62%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 9ct Emerald Cabochon (16.19×10.79mm, Green) and 9ct Tourmaline Cabochon (15.57×10.38mm, 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.


9 Ct Emerald (Cabochon) 9 Ct Tourmaline (Cabochon)
16.19×10.79 mm vs 15.57×10.38 mm
143.25 mm²   132.53 mm²
Face-up size outline for 9ct Emerald (16.19×10.79mm, cabochon cut)
Face-up size outline for 9ct Tourmaline (15.57×10.38mm, cabochon cut)
9ct Emerald Cabochon (16.19×10.79mm)
9ct Tourmaline Cabochon (15.57×10.38mm)
Difference: 8% (10.72 mm²)
9ct Emerald (Cabochon, 16.19×10.79mm) has approx. 8% more face-up area than 9ct Tourmaline (Cabochon, 15.57×10.38mm).


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