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3ct Alexandrite (Round, 8.83×8.83mm, Bluish Green) vs 3ct Emerald (Emerald, 10.48×7.76mm, Green)


Quick summary: When looked from above (face-up position), 3ct Emerald (10.48×7.76mm, emerald cut) appears 23% larger than 3ct Alexandrite (8.83×8.83mm, round cut). See below how they compare side-by-side on a ring and finger.

3ct Alexandrite (round cut)
vs
 3ct Emerald (emerald cut)
bluish green
 
green
8.83×8.83 mm 10.48×7.76 mm
actual size
Actual size of 3ct Alexandrite (round cut, 8.83×8.83mm, Bluish Green color)   Actual size of 3ct Emerald (emerald cut, 10.48×7.76mm, Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Bluish Green 3ct Alexandrite (round cut, 8.83×8.83mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Green 3ct Emerald (emerald cut, 10.48×7.76mm) 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
 53% vs 46%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 3ct Alexandrite Round (8.83×8.83mm, Bluish Green) and 3ct Emerald Emerald (10.48×7.76mm, 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 Emerald for a given carat weight, because it has higher specific gravity (3.73 vs. 2.72 - this means it's "heavier" compared to Emerald 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.


3 Ct Alexandrite (Round) 3 Ct Emerald (Emerald)
8.83×8.83 mm vs 10.48×7.76 mm
61.24 mm²   75.63 mm²
Face-up size outline for 3ct Emerald (10.48×7.76mm, emerald cut)
Face-up size outline for 3ct Alexandrite (8.83×8.83mm, round cut)
3ct Alexandrite Round (8.83×8.83mm)
3ct Emerald Emerald (10.48×7.76mm)
Difference: 23% (14.39 mm²)
3ct Emerald (Emerald, 10.48×7.76mm) has approx. 23% more face-up area than 3ct Alexandrite (Round, 8.83×8.83mm).


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