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8ct Alexandrite (Princess, 10.75×10.75mm, Bluish Green) vs 8ct Sapphire (Princess, 10.51×10.51mm, Blue)


Quick summary: When looked from above (face-up position), 8ct Alexandrite (10.75×10.75mm, princess cut) appears 5% larger than 8ct Sapphire (10.51×10.51mm, princess cut). See below how they compare side-by-side on a ring and finger.

8ct Alexandrite (princess cut)
vs
 8ct Sapphire (princess cut)
bluish green
 
blue
10.75×10.75 mm 10.51×10.51 mm
actual size
Actual size of 8ct Alexandrite (princess cut, 10.75×10.75mm, Bluish Green color)   Actual size of 8ct Sapphire (princess cut, 10.51×10.51mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Bluish Green 8ct Alexandrite (princess cut, 10.75×10.75mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 8ct Sapphire (princess cut, 10.51×10.51mm) 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
 64% vs 63%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 8ct Alexandrite Princess (10.75×10.75mm, Bluish Green) and 8ct Sapphire Princess (10.51×10.51mm, Blue) 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, Sapphire will face-up smaller than Alexandrite for a given carat weight, because it has higher specific gravity (4 vs. 3.73 - this means it's "heavier" compared to Alexandrite 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.


8 Ct Alexandrite (Princess) 8 Ct Sapphire (Princess)
10.75×10.75 mm vs 10.51×10.51 mm
115.56 mm²   110.46 mm²
Face-up size outline for 8ct Alexandrite (10.75×10.75mm, princess cut)
Face-up size outline for 8ct Sapphire (10.51×10.51mm, princess cut)
8ct Alexandrite Princess (10.75×10.75mm)
8ct Sapphire Princess (10.51×10.51mm)
Difference: 5% (5.1 mm²)
8ct Alexandrite (Princess, 10.75×10.75mm) has approx. 5% more face-up area than 8ct Sapphire (Princess, 10.51×10.51mm).


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