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2.1ct Diamond (Princess, 7.06×7.06mm, White) vs 2.1ct Alexandrite (Oval, 9.95×6.63mm, Bluish Green)


Quick summary: When looked from above (face-up position), 2.1ct Alexandrite (9.95×6.63mm, oval cut) appears 9% larger than 2.1ct Diamond (7.06×7.06mm, princess cut). See below how they compare side-by-side on a ring and finger.

2.1ct Diamond (princess cut)
vs
2.1ct Alexandrite (oval cut)
white
 
bluish green
7.06×7.06 mm 9.95×6.63 mm
actual size
Actual size of 2.1ct Diamond (princess cut, 7.06×7.06mm, White color)   Actual size of 2.1ct Alexandrite (oval cut, 9.95×6.63mm, Bluish Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 2.1ct Diamond (princess cut, 7.06×7.06mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Bluish Green 2.1ct Alexandrite (oval cut, 9.95×6.63mm) 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
42% vs 40%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 2.1ct Diamond Princess (7.06×7.06mm, White) and 2.1ct Alexandrite Oval (9.95×6.63mm, 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 Diamond for a given carat weight, because it has higher specific gravity (3.73 vs. 3.52 - this means it's "heavier" compared to Diamond 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.


2.1 Ct Diamond (Princess) 2.1 Ct Alexandrite (Oval)
7.06×7.06 mm vs 9.95×6.63 mm
49.84 mm²   54.09 mm²
Face-up size outline for 2.1ct Alexandrite (9.95×6.63mm, oval cut)
Face-up size outline for 2.1ct Diamond (7.06×7.06mm, princess cut)
2.1ct Diamond Princess (7.06×7.06mm)
2.1ct Alexandrite Oval (9.95×6.63mm)
Difference: 9% (4.25 mm²)
2.1ct Alexandrite (Oval, 9.95×6.63mm) has approx. 9% more face-up area than 2.1ct Diamond (Princess, 7.06×7.06mm).


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