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18ct Spinel (Baguette, 18.81×12.54mm, Red) vs 18ct Andesine (Baguette, 20.78×13.85mm, Orange)


Quick summary: When looked from above (face-up position), 18ct Andesine (20.78×13.85mm, baguette cut) appears 22% larger than 18ct Spinel (18.81×12.54mm, baguette cut). See below how they compare side-by-side on a ring and finger.

18ct Spinel (baguette cut)
vs
 18ct Andesine (baguette cut)
red
 
orange
18.81×12.54 mm 20.78×13.85 mm
actual size
Actual size of 18ct Spinel (baguette cut, 18.81×12.54mm, Red color)   Actual size of 18ct Andesine (baguette cut, 20.78×13.85mm, Orange color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Red 18ct Spinel (baguette cut, 18.81×12.54mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Orange 18ct Andesine (baguette cut, 20.78×13.85mm) 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
 75% vs 82%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 18ct Spinel Baguette (18.81×12.54mm, Red) and 18ct Andesine Baguette (20.78×13.85mm, 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.


18 Ct Spinel (Baguette) 18 Ct Andesine (Baguette)
18.81×12.54 mm vs 20.78×13.85 mm
235.88 mm²   287.8 mm²
Face-up size outline for 18ct Andesine (20.78×13.85mm, baguette cut)
Face-up size outline for 18ct Spinel (18.81×12.54mm, baguette cut)
18ct Spinel Baguette (18.81×12.54mm)
18ct Andesine Baguette (20.78×13.85mm)
Difference: 22% (51.92 mm²)
18ct Andesine (Baguette, 20.78×13.85mm) has approx. 22% more face-up area than 18ct Spinel (Baguette, 18.81×12.54mm).


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