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33ct Diaspore (Round, 20.24×20.24mm, Light Yellowish Green) vs 33ct Alexandrite (Round, 19.63×19.63mm, Bluish Green)


Quick summary: When looked from above (face-up position), 33ct Diaspore (20.24×20.24mm, round cut) appears 6% larger than 33ct Alexandrite (19.63×19.63mm, round cut). See below how they compare side-by-side on a ring and finger.

33ct Diaspore (round cut)
vs
 33ct Alexandrite (round cut)
light yellowish green
 
bluish green
20.24×20.24 mm 19.63×19.63 mm
actual size
Actual size of 33ct Diaspore (round cut, 20.24×20.24mm, Light Yellowish Green color)   Actual size of 33ct Alexandrite (round cut, 19.63×19.63mm, Bluish Green color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Light Yellowish Green 33ct Diaspore (round cut, 20.24×20.24mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Bluish Green 33ct Alexandrite (round cut, 19.63×19.63mm) 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
 120% vs 117%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 33ct Diaspore Round (20.24×20.24mm, Light Yellowish Green) and 33ct Alexandrite Round (19.63×19.63mm, 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 Diaspore for a given carat weight, because it has higher specific gravity (3.73 vs. 3.4 - this means it's "heavier" compared to Diaspore 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.


33 Ct Diaspore (Round) 33 Ct Alexandrite (Round)
20.24×20.24 mm vs 19.63×19.63 mm
321.74 mm²   302.64 mm²
Face-up size outline for 33ct Diaspore (20.24×20.24mm, round cut)
Face-up size outline for 33ct Alexandrite (19.63×19.63mm, round cut)
33ct Diaspore Round (20.24×20.24mm)
33ct Alexandrite Round (19.63×19.63mm)
Difference: 6% (19.1 mm²)
33ct Diaspore (Round, 20.24×20.24mm) has approx. 6% more face-up area than 33ct Alexandrite (Round, 19.63×19.63mm).


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