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13ct Spinel (Round, 14.56×14.56mm, Red) vs 13ct Andesine (Round, 16.08×16.08mm, Orange)


Quick summary: When looked from above (face-up position), 13ct Andesine (16.08×16.08mm, round cut) appears 22% larger than 13ct Spinel (14.56×14.56mm, round cut). See below how they compare side-by-side on a ring and finger.

13ct Spinel (round cut)
vs
 13ct Andesine (round cut)
red
 
orange
14.56×14.56 mm 16.08×16.08 mm
actual size
Actual size of 13ct Spinel (round cut, 14.56×14.56mm, Red color)   Actual size of 13ct Andesine (round cut, 16.08×16.08mm, Orange color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Red 13ct Spinel (round cut, 14.56×14.56mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Orange 13ct Andesine (round cut, 16.08×16.08mm) 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
 87% vs 96%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 13ct Spinel Round (14.56×14.56mm, Red) and 13ct Andesine Round (16.08×16.08mm, Orange) 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 Andesine for a given carat weight, because it has higher specific gravity (3.6 vs. 2.67 - this means it's "heavier" compared to Andesine 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.


13 Ct Spinel (Round) 13 Ct Andesine (Round)
14.56×14.56 mm vs 16.08×16.08 mm
166.5 mm²   203.08 mm²
Face-up size outline for 13ct Andesine (16.08×16.08mm, round cut)
Face-up size outline for 13ct Spinel (14.56×14.56mm, round cut)
13ct Spinel Round (14.56×14.56mm)
13ct Andesine Round (16.08×16.08mm)
Difference: 22% (36.58 mm²)
13ct Andesine (Round, 16.08×16.08mm) has approx. 22% more face-up area than 13ct Spinel (Round, 14.56×14.56mm).


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