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14ct Amethyst (Oval, 21.2×14.13mm, Violet) vs 14ct Alexandrite (Oval, 18.92×12.61mm, Bluish Green)


Quick summary: When looked from above (face-up position), 14ct Amethyst (21.2×14.13mm, oval cut) appears 26% larger than 14ct Alexandrite (18.92×12.61mm, oval cut). See below how they compare side-by-side on a ring and finger.

14ct Amethyst (oval cut)
vs
 14ct Alexandrite (oval cut)
violet
 
bluish green
21.2×14.13 mm 18.92×12.61 mm
actual size
Actual size of 14ct Amethyst (oval cut, 21.2×14.13mm, Violet color)   Actual size of 14ct Alexandrite (oval cut, 18.92×12.61mm, Bluish Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Violet 14ct Amethyst (oval cut, 21.2×14.13mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Bluish Green 14ct Alexandrite (oval cut, 18.92×12.61mm) 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
 84% vs 75%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 14ct Amethyst Oval (21.2×14.13mm, Violet) and 14ct Alexandrite Oval (18.92×12.61mm, 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 smaller than Amethyst for a given carat weight, because it has higher specific gravity (3.73 vs. 2.65 - this means it's "heavier" compared to Amethyst 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.


14 Ct Amethyst (Oval) 14 Ct Alexandrite (Oval)
21.2×14.13 mm vs 18.92×12.61 mm
245.64 mm²   195.64 mm²
Face-up size outline for 14ct Amethyst (21.2×14.13mm, oval cut)
Face-up size outline for 14ct Alexandrite (18.92×12.61mm, oval cut)
14ct Amethyst Oval (21.2×14.13mm)
14ct Alexandrite Oval (18.92×12.61mm)
Difference: 26% (50 mm²)
14ct Amethyst (Oval, 21.2×14.13mm) has approx. 26% more face-up area than 14ct Alexandrite (Oval, 18.92×12.61mm).


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