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9.5ct Spinel (Oval, 16.82×11.21mm, Red) vs 9.5ct Alexandrite (Oval, 16.62×11.08mm, Bluish Green)


Quick summary: When looked from above (face-up position), 9.5ct Spinel (16.82×11.21mm, oval cut) appears 2% larger than 9.5ct Alexandrite (16.62×11.08mm, oval cut). See below how they compare side-by-side on a ring and finger.

9.5ct Spinel (oval cut)
vs
 9.5ct Alexandrite (oval cut)
red
 
bluish green
16.82×11.21 mm 16.62×11.08 mm
actual size
Actual size of 9.5ct Spinel (oval cut, 16.82×11.21mm, Red color)   Actual size of 9.5ct Alexandrite (oval cut, 16.62×11.08mm, Bluish Green color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Red 9.5ct Spinel (oval cut, 16.82×11.21mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Bluish Green 9.5ct Alexandrite (oval cut, 16.62×11.08mm) 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
 67% vs 66%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 9.5ct Spinel Oval (16.82×11.21mm, Red) and 9.5ct Alexandrite Oval (16.62×11.08mm, 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 Spinel for a given carat weight, because it has higher specific gravity (3.73 vs. 3.6 - this means it's "heavier" compared to Spinel 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.


9.5 Ct Spinel (Oval) 9.5 Ct Alexandrite (Oval)
16.82×11.21 mm vs 16.62×11.08 mm
154.61 mm²   151 mm²
Face-up size outline for 9.5ct Spinel (16.82×11.21mm, oval cut)
Face-up size outline for 9.5ct Alexandrite (16.62×11.08mm, oval cut)
9.5ct Spinel Oval (16.82×11.21mm)
9.5ct Alexandrite Oval (16.62×11.08mm)
Difference: 2% (3.61 mm²)
9.5ct Spinel (Oval, 16.82×11.21mm) has approx. 2% more face-up area than 9.5ct Alexandrite (Oval, 16.62×11.08mm).


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