1.25ct Fluorite (Princess, 6.11×6.11mm, Bluish Green) vs 1.25ct Alexandrite (Princess, 5.79×5.79mm, Bluish Green)
Quick summary: When looked from above (face-up position), 1.25ct Fluorite (6.11×6.11mm, princess cut) appears 11% larger than 1.25ct Alexandrite (5.79×5.79mm, princess cut). See below how they compare side-by-side on a ring and finger.
| 1.25ct Fluorite (princess cut) |
vs
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1.25ct Alexandrite (princess cut) |
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bluish green |
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| 6.11×6.11 mm | 5.79×5.79 mm | |
| actual size | ||
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Actual size is set for screen
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Ring:
Skin tone:
Ring width: 3.0 mm
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64 mm |
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Actual sizes of
1.25ct Fluorite Princess (6.11×6.11mm, Bluish Green)
and
1.25ct Alexandrite Princess (5.79×5.79mm, 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.
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.
| 1.25 Ct Fluorite (Princess) | 1.25 Ct Alexandrite (Princess) | |
| 6.11×6.11 mm | vs | 5.79×5.79 mm |
| 37.33 mm² | 33.52 mm² |
| 1.25ct Fluorite Princess (6.11×6.11mm) | |
| 1.25ct Alexandrite Princess (5.79×5.79mm) | |
| Difference: 11% (3.81 mm²) |
1.25ct Fluorite (Princess, 6.11×6.11mm) has approx. 11% more face-up area than 1.25ct Alexandrite (Princess, 5.79×5.79mm).
Popular comparisons:
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- 1ct Topaz (Round, Blue, 6 x 6) vs. 0.5ct Topaz (Round, Blue, 5 x 5)
- 1ct Sapphire (Baguette, Blue, 6.93 x 4.62) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)