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11ct Amethyst (Emerald, 16.29×12.07mm, Violet) vs 11ct Alexandrite (Emerald, 14.54×10.77mm, Bluish Green)


Quick summary: When looked from above (face-up position), 11ct Amethyst (16.29×12.07mm, emerald cut) appears 26% larger than 11ct Alexandrite (14.54×10.77mm, emerald cut). See below how they compare side-by-side on a ring and finger.

11ct Amethyst (emerald cut)
vs
 11ct Alexandrite (emerald cut)
violet
 
bluish green
16.29×12.07 mm 14.54×10.77 mm
actual size
Actual size of 11ct Amethyst (emerald cut, 16.29×12.07mm, Violet color)   Actual size of 11ct Alexandrite (emerald cut, 14.54×10.77mm, 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 11ct Amethyst (emerald cut, 16.29×12.07mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Bluish Green 11ct Alexandrite (emerald cut, 14.54×10.77mm) 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
 72% vs 64%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 11ct Amethyst Emerald (16.29×12.07mm, Violet) and 11ct Alexandrite Emerald (14.54×10.77mm, 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.


11 Ct Amethyst (Emerald) 11 Ct Alexandrite (Emerald)
16.29×12.07 mm vs 14.54×10.77 mm
182.86 mm²   145.63 mm²
Face-up size outline for 11ct Amethyst (16.29×12.07mm, emerald cut)
Face-up size outline for 11ct Alexandrite (14.54×10.77mm, emerald cut)
11ct Amethyst Emerald (16.29×12.07mm)
11ct Alexandrite Emerald (14.54×10.77mm)
Difference: 26% (37.23 mm²)
11ct Amethyst (Emerald, 16.29×12.07mm) has approx. 26% more face-up area than 11ct Alexandrite (Emerald, 14.54×10.77mm).


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