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8ct Spinel (Round, 12.38×12.38mm, Red) vs 8ct Emerald (Emerald, 14.55×10.78mm, Green)


Quick summary: When looked from above (face-up position), 8ct Emerald (14.55×10.78mm, emerald cut) appears 21% larger than 8ct Spinel (12.38×12.38mm, round cut). See below how they compare side-by-side on a ring and finger.

8ct Spinel (round cut)
vs
 8ct Emerald (emerald cut)
red
 
green
12.38×12.38 mm 14.55×10.78 mm
actual size
Actual size of 8ct Spinel (round cut, 12.38×12.38mm, Red color)   Actual size of 8ct Emerald (emerald cut, 14.55×10.78mm, Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Red 8ct Spinel (round cut, 12.38×12.38mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Green 8ct Emerald (emerald cut, 14.55×10.78mm) 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
 74% vs 64%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 8ct Spinel Round (12.38×12.38mm, Red) and 8ct Emerald Emerald (14.55×10.78mm, 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.


8 Ct Spinel (Round) 8 Ct Emerald (Emerald)
12.38×12.38 mm vs 14.55×10.78 mm
120.37 mm²   145.87 mm²
Face-up size outline for 8ct Emerald (14.55×10.78mm, emerald cut)
Face-up size outline for 8ct Spinel (12.38×12.38mm, round cut)
8ct Spinel Round (12.38×12.38mm)
8ct Emerald Emerald (14.55×10.78mm)
Difference: 21% (25.5 mm²)
8ct Emerald (Emerald, 14.55×10.78mm) has approx. 21% more face-up area than 8ct Spinel (Round, 12.38×12.38mm).


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