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4ct Emerald (Cushion, 9.99×9.99mm, Green) vs 4ct Tourmaline (Cushion, 9.61×9.61mm, Purple)


Quick summary: When looked from above (face-up position), 4ct Emerald (9.99×9.99mm, cushion cut) appears 8% larger than 4ct Tourmaline (9.61×9.61mm, cushion cut). See below how they compare side-by-side on a ring and finger.

4ct Emerald (cushion cut)
vs
 4ct Tourmaline (cushion cut)
green
 
purple
9.99×9.99 mm 9.61×9.61 mm
actual size
Actual size of 4ct Emerald (cushion cut, 9.99×9.99mm, Green color)   Actual size of 4ct Tourmaline (cushion cut, 9.61×9.61mm, 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 (cushion cut, 9.99×9.99mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Purple 4ct Tourmaline (cushion cut, 9.61×9.61mm) 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
 60% vs 57%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 4ct Emerald Cushion (9.99×9.99mm, Green) and 4ct Tourmaline Cushion (9.61×9.61mm, 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 (Cushion) 4 Ct Tourmaline (Cushion)
9.99×9.99 mm vs 9.61×9.61 mm
89.82 mm²   83.12 mm²
Face-up size outline for 4ct Emerald (9.99×9.99mm, cushion cut)
Face-up size outline for 4ct Tourmaline (9.61×9.61mm, cushion cut)
4ct Emerald Cushion (9.99×9.99mm)
4ct Tourmaline Cushion (9.61×9.61mm)
Difference: 8% (6.7 mm²)
4ct Emerald (Cushion, 9.99×9.99mm) has approx. 8% more face-up area than 4ct Tourmaline (Cushion, 9.61×9.61mm).


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