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40ct Spinel (Princess, 18.61×18.61mm, Red) vs 40ct Andesine (Princess, 20.56×20.56mm, Orange)


Quick summary: When looked from above (face-up position), 40ct Andesine (20.56×20.56mm, princess cut) appears 22% larger than 40ct Spinel (18.61×18.61mm, princess cut). See below how they compare side-by-side on a ring and finger.

40ct Spinel (princess cut)
vs
 40ct Andesine (princess cut)
red
 
orange
18.61×18.61 mm 20.56×20.56 mm
actual size
Actual size of 40ct Spinel (princess cut, 18.61×18.61mm, Red color)   Actual size of 40ct Andesine (princess cut, 20.56×20.56mm, Orange color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Red 40ct Spinel (princess cut, 18.61×18.61mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Orange 40ct Andesine (princess cut, 20.56×20.56mm) 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
 111% vs 122%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 40ct Spinel Princess (18.61×18.61mm, Red) and 40ct Andesine Princess (20.56×20.56mm, 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.


40 Ct Spinel (Princess) 40 Ct Andesine (Princess)
18.61×18.61 mm vs 20.56×20.56 mm
346.33 mm²   422.71 mm²
Face-up size outline for 40ct Andesine (20.56×20.56mm, princess cut)
Face-up size outline for 40ct Spinel (18.61×18.61mm, princess cut)
40ct Spinel Princess (18.61×18.61mm)
40ct Andesine Princess (20.56×20.56mm)
Difference: 22% (76.38 mm²)
40ct Andesine (Princess, 20.56×20.56mm) has approx. 22% more face-up area than 40ct Spinel (Princess, 18.61×18.61mm).


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