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28ct Amethyst (Pear, 29.63×17.85mm, Violet) vs 28ct Alexandrite (Pear, 26.43×15.92mm, Bluish Green)


Quick summary: When looked from above (face-up position), 28ct Amethyst (29.63×17.85mm, pear cut) appears 26% larger than 28ct Alexandrite (26.43×15.92mm, pear cut). See below how they compare side-by-side on a ring and finger.

28ct Amethyst (pear cut)
vs
 28ct Alexandrite (pear cut)
violet
 
bluish green
29.63×17.85 mm 26.43×15.92 mm
actual size
Actual size of 28ct Amethyst (pear cut, 29.63×17.85mm, Violet color)   Actual size of 28ct Alexandrite (pear cut, 26.43×15.92mm, 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 28ct Amethyst (pear cut, 29.63×17.85mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Bluish Green 28ct Alexandrite (pear cut, 26.43×15.92mm) 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
 106% vs 95%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 28ct Amethyst Pear (29.63×17.85mm, Violet) and 28ct Alexandrite Pear (26.43×15.92mm, 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.


28 Ct Amethyst (Pear) 28 Ct Alexandrite (Pear)
29.63×17.85 mm vs 26.43×15.92 mm
386.09 mm²   307.16 mm²
Face-up size outline for 28ct Amethyst (29.63×17.85mm, pear cut)
Face-up size outline for 28ct Alexandrite (26.43×15.92mm, pear cut)
28ct Amethyst Pear (29.63×17.85mm)
28ct Alexandrite Pear (26.43×15.92mm)
Difference: 26% (78.93 mm²)
28ct Amethyst (Pear, 29.63×17.85mm) has approx. 26% more face-up area than 28ct Alexandrite (Pear, 26.43×15.92mm).


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