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16ct Benitoite (Oval, 19.92×13.28mm, Blue) vs 16ct Alexandrite (Oval, 19.77×13.18mm, Bluish Green)


Quick summary: When looked from above (face-up position), 16ct Benitoite (19.92×13.28mm, oval cut) appears 2% larger than 16ct Alexandrite (19.77×13.18mm, oval cut). See below how they compare side-by-side on a ring and finger.

16ct Benitoite (oval cut)
vs
 16ct Alexandrite (oval cut)
blue
 
bluish green
19.92×13.28 mm 19.77×13.18 mm
actual size
Actual size of 16ct Benitoite (oval cut, 19.92×13.28mm, Blue color)   Actual size of 16ct Alexandrite (oval cut, 19.77×13.18mm, Bluish Green color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 16ct Benitoite (oval cut, 19.92×13.28mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Bluish Green 16ct Alexandrite (oval cut, 19.77×13.18mm) 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
 79% vs 78%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 16ct Benitoite Oval (19.92×13.28mm, Blue) and 16ct Alexandrite Oval (19.77×13.18mm, Bluish 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, Alexandrite will face-up slightly smaller than Benitoite for a given carat weight, because it has higher specific gravity (3.73 vs. 3.65 - this means it's "slightly heavier" compared to Benitoite 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.


16 Ct Benitoite (Oval) 16 Ct Alexandrite (Oval)
19.92×13.28 mm vs 19.77×13.18 mm
216.92 mm²   213.67 mm²
Face-up size outline for 16ct Benitoite (19.92×13.28mm, oval cut)
Face-up size outline for 16ct Alexandrite (19.77×13.18mm, oval cut)
16ct Benitoite Oval (19.92×13.28mm)
16ct Alexandrite Oval (19.77×13.18mm)
Difference: 2% (3.25 mm²)
16ct Benitoite (Oval, 19.92×13.28mm) has approx. 2% more face-up area than 16ct Alexandrite (Oval, 19.77×13.18mm).


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