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1.65ct Alexandrite (Oval, 9.18×6.12mm, Bluish Green) vs 0.7ct Sapphire (Marquise, 8.76×4.38mm, Blue)


Quick summary: When looked from above (face-up position), 1.65ct Alexandrite (9.18×6.12mm, oval cut) appears 69% larger than 0.7ct Sapphire (8.76×4.38mm, marquise cut). See below how they compare side-by-side on a ring and finger.

1.65ct Alexandrite (oval cut)
vs
 0.7ct Sapphire (marquise cut)
bluish green
 
blue
9.18×6.12 mm 8.76×4.38 mm
actual size
Actual size of 1.65ct Alexandrite (oval cut, 9.18×6.12mm, Bluish Green color)   Actual size of 0.7ct Sapphire (marquise cut, 8.76×4.38mm, 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 1.65ct Alexandrite (oval cut, 9.18×6.12mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 0.7ct Sapphire (marquise cut, 8.76×4.38mm) 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
 37% vs 26%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 1.65ct Alexandrite Oval (9.18×6.12mm, Bluish Green) and 0.7ct Sapphire Marquise (8.76×4.38mm, 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.


1.65 Ct Alexandrite (Oval) 0.7 Ct Sapphire (Marquise)
9.18×6.12 mm vs 8.76×4.38 mm
46.07 mm²   27.24 mm²
Face-up size outline for 1.65ct Alexandrite (9.18×6.12mm, oval cut)
Face-up size outline for 0.7ct Sapphire (8.76×4.38mm, marquise cut)
1.65ct Alexandrite Oval (9.18×6.12mm)
0.7ct Sapphire Marquise (8.76×4.38mm)
Difference: 69% (18.83 mm²)
1.65ct Alexandrite (Oval, 9.18×6.12mm) has approx. 69% more face-up area than 0.7ct Sapphire (Marquise, 8.76×4.38mm).


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