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6ct Alexandrite (Cushion, 10.3×10.3mm, Bluish Green) vs 6ct Sapphire (Cushion, 10.06×10.06mm, Blue)


Quick summary: When looked from above (face-up position), 6ct Alexandrite (10.3×10.3mm, cushion cut) appears 5% larger than 6ct Sapphire (10.06×10.06mm, cushion cut). See below how they compare side-by-side on a ring and finger.

6ct Alexandrite (cushion cut)
vs
 6ct Sapphire (cushion cut)
bluish green
 
blue
10.3×10.3 mm 10.06×10.06 mm
actual size
Actual size of 6ct Alexandrite (cushion cut, 10.3×10.3mm, Bluish Green color)   Actual size of 6ct Sapphire (cushion cut, 10.06×10.06mm, 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 6ct Alexandrite (cushion cut, 10.3×10.3mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 6ct Sapphire (cushion cut, 10.06×10.06mm) 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
 61% vs 60%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 6ct Alexandrite Cushion (10.3×10.3mm, Bluish Green) and 6ct Sapphire Cushion (10.06×10.06mm, 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.


6 Ct Alexandrite (Cushion) 6 Ct Sapphire (Cushion)
10.3×10.3 mm vs 10.06×10.06 mm
95.48 mm²   91.08 mm²
Face-up size outline for 6ct Alexandrite (10.3×10.3mm, cushion cut)
Face-up size outline for 6ct Sapphire (10.06×10.06mm, cushion cut)
6ct Alexandrite Cushion (10.3×10.3mm)
6ct Sapphire Cushion (10.06×10.06mm)
Difference: 5% (4.4 mm²)
6ct Alexandrite (Cushion, 10.3×10.3mm) has approx. 5% more face-up area than 6ct Sapphire (Cushion, 10.06×10.06mm).


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