×
carat vs. color  length*  width*
  ×

(or examine a single gem)
* size in mm (optional)

8 Ct Spinel (Round)

vs

8 Ct Emerald (Emerald)

red
 
green
12.38×12.38 mm 14.55×10.78 mm
actual size
Actual size of 8ct Spinel   Actual size of 8ct Emerald
 
Actual size is set for screen Change
Settings
Ring: Skin tone:
Ring width: 3.0 mm
Saved...
Left finger image
Ring on left finger
Red 8ct Spinel on a ring
64 mm
Right finger image
Ring on a right finger
Green 8ct Emerald on a ring
Your settings
Ring
Gold
Skin tone
Light
Ring diameter
16.9 mm
Ring width
3.0 mm
Finger length
64 mm
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
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?

JamesAllen → high-quality Emeralds, high-end jewelry and competitive prices. Highly recommended.
Amazon → usually offers a good selection from many different vendors. Worth a check.

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. 2.7 - 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
Face-up size outline
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).


Popular comparisons:

Enter your screen size (diagonal)

My screen size is  inches



Actual size is currently adjusted to screen.

If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.