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2.5ct Emerald (Cushion, 8.54×8.54mm, Green) vs 2.5ct Tourmaline (Cushion, 8.21×8.21mm, Purple)


Quick summary: When looked from above (face-up position), 2.5ct Emerald (8.54×8.54mm, cushion cut) appears 8% larger than 2.5ct Tourmaline (8.21×8.21mm, cushion cut). See below how they compare side-by-side on a ring and finger.

2.5ct Emerald (cushion cut)
vs
 2.5ct Tourmaline (cushion cut)
green
 
purple
8.54×8.54 mm 8.21×8.21 mm
actual size
Actual size of 2.5ct Emerald (cushion cut, 8.54×8.54mm, Green color)   Actual size of 2.5ct Tourmaline (cushion cut, 8.21×8.21mm, Purple color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Green 2.5ct Emerald (cushion cut, 8.54×8.54mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Purple 2.5ct Tourmaline (cushion cut, 8.21×8.21mm) 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
 51% vs 49%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 2.5ct Emerald Cushion (8.54×8.54mm, Green) and 2.5ct Tourmaline Cushion (8.21×8.21mm, 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.


2.5 Ct Emerald (Cushion) 2.5 Ct Tourmaline (Cushion)
8.54×8.54 mm vs 8.21×8.21 mm
65.64 mm²   60.66 mm²
Face-up size outline for 2.5ct Emerald (8.54×8.54mm, cushion cut)
Face-up size outline for 2.5ct Tourmaline (8.21×8.21mm, cushion cut)
2.5ct Emerald Cushion (8.54×8.54mm)
2.5ct Tourmaline Cushion (8.21×8.21mm)
Difference: 8% (4.98 mm²)
2.5ct Emerald (Cushion, 8.54×8.54mm) has approx. 8% more face-up area than 2.5ct Tourmaline (Cushion, 8.21×8.21mm).


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