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5ct Spinel (Round, 10.59×10.59mm, Red) vs 4ct Emerald (Emerald, 11.56×8.56mm, Green)


Quick summary: When looked from above (face-up position), 4ct Emerald (11.56×8.56mm, emerald cut) appears 4% larger than 5ct Spinel (10.59×10.59mm, round cut). See below how they compare side-by-side on a ring and finger.

5ct Spinel (round cut)
vs
 4ct Emerald (emerald cut)
red
 
green
10.59×10.59 mm 11.56×8.56 mm
actual size
Actual size of 5ct Spinel (round cut, 10.59×10.59mm, Red color)   Actual size of 4ct Emerald (emerald cut, 11.56×8.56mm, Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Red 5ct Spinel (round cut, 10.59×10.59mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Green 4ct Emerald (emerald cut, 11.56×8.56mm) 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
 63% vs 51%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 5ct Spinel Round (10.59×10.59mm, Red) and 4ct Emerald Emerald (11.56×8.56mm, Green) 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, Spinel will face-up smaller than Emerald for a given carat weight, because it has higher specific gravity (3.6 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.


5 Ct Spinel (Round) 4 Ct Emerald (Emerald)
10.59×10.59 mm vs 11.56×8.56 mm
88.08 mm²   92.03 mm²
Face-up size outline for 4ct Emerald (11.56×8.56mm, emerald cut)
Face-up size outline for 5ct Spinel (10.59×10.59mm, round cut)
5ct Spinel Round (10.59×10.59mm)
4ct Emerald Emerald (11.56×8.56mm)
Difference: 4% (3.95 mm²)
4ct Emerald (Emerald, 11.56×8.56mm) has approx. 4% more face-up area than 5ct Spinel (Round, 10.59×10.59mm).


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