×
carat vs. color  length*  width*
  ×

(or examine a )
* size in mm (optional)

1.75ct Fluorite (Marquise, 12.64×6.32mm, Bluish Green) vs 1.75ct Alexandrite (Marquise, 12×6mm, Bluish Green)


Quick summary: When looked from above (face-up position), 1.75ct Fluorite (12.64×6.32mm, marquise cut) appears 11% larger than 1.75ct Alexandrite (12×6mm, marquise cut). See below how they compare side-by-side on a ring and finger.

1.75ct Fluorite (marquise cut)
vs
 1.75ct Alexandrite (marquise cut)
bluish green
 
bluish green
12.64×6.32 mm 12×6 mm
actual size
Actual size of 1.75ct Fluorite (marquise cut, 12.64×6.32mm, Bluish Green color)   Actual size of 1.75ct Alexandrite (marquise cut, 12×6mm, Bluish Green color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Bluish Green 1.75ct Fluorite (marquise cut, 12.64×6.32mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Bluish Green 1.75ct Alexandrite (marquise cut, 12×6mm) 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
 38% vs 36%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 1.75ct Fluorite Marquise (12.64×6.32mm, Bluish Green) and 1.75ct Alexandrite Marquise (12×6mm, 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 Fluorite for a given carat weight, because it has higher specific gravity (3.73 vs. 3.18 - this means it's "heavier" compared to Fluorite 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.


1.75 Ct Fluorite (Marquise) 1.75 Ct Alexandrite (Marquise)
12.64×6.32 mm vs 12×6 mm
56.72 mm²   51.12 mm²
Face-up size outline for 1.75ct Fluorite (12.64×6.32mm, marquise cut)
Face-up size outline for 1.75ct Alexandrite (12×6mm, marquise cut)
1.75ct Fluorite Marquise (12.64×6.32mm)
1.75ct Alexandrite Marquise (12×6mm)
Difference: 11% (5.6 mm²)
1.75ct Fluorite (Marquise, 12.64×6.32mm) has approx. 11% more face-up area than 1.75ct Alexandrite (Marquise, 12×6mm).


Popular comparisons: