18ct Benitoite (Princess, 14.19×14.19mm, Blue) vs 18ct Alexandrite (Princess, 14.09×14.09mm, Bluish Green)
Quick summary: When looked from above (face-up position), 18ct Benitoite (14.19×14.19mm, princess cut) appears 1% larger than 18ct Alexandrite (14.09×14.09mm, princess cut). See below how they compare side-by-side on a ring and finger.
| 18ct Benitoite (princess cut) |
vs
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18ct Alexandrite (princess cut) |
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blue |
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| 14.19×14.19 mm | 14.09×14.09 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
18ct Benitoite Princess (14.19×14.19mm, Blue)
and
18ct Alexandrite Princess (14.09×14.09mm, 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 slightly smaller than Benitoite for a given
carat weight, because it has higher specific gravity
(3.73 vs. 3.65 - this means it's "slightly heavier" compared to Benitoite 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.
| 18 Ct Benitoite (Princess) | 18 Ct Alexandrite (Princess) | |
| 14.19×14.19 mm | vs | 14.09×14.09 mm |
| 201.36 mm² | 198.53 mm² |
| 18ct Benitoite Princess (14.19×14.19mm) | |
| 18ct Alexandrite Princess (14.09×14.09mm) | |
| Difference: 1% (2.83 mm²) |
18ct Benitoite (Princess, 14.19×14.19mm) has approx. 1% more face-up area than 18ct Alexandrite (Princess, 14.09×14.09mm).
Popular comparisons:
- 1ct Benitoite (Princess, Blue, 5.54 x 5.54) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1ct Benitoite (Princess, Blue, 5.54 x 5.54) vs. 1.5ct Emerald (Emerald, Dark Green, 8.33 x 6.17)
- 0.79ct Benitoite (Princess, Blue, 5.12 x 5.12) vs. 1ct Diamond (Princess, White, 5.51 x 5.51)
- 0.77ct Benitoite (Princess, Blue, 5.08 x 5.08) vs. 0.79ct Sapphire (Oval, Dark Blue, 6.99 x 4.66)
- 1ct Benitoite (Princess, Dark Blue, 5.54 x 5.54) vs. 0.5ct Benitoite (Princess, Dark Blue, 4.4 x 4.4)
- 1ct Benitoite (Princess, Dark Blue, 5.54 x 5.54) vs. 0.75ct Benitoite (Princess, Dark Blue, 5.03 x 5.03)
- 3ct Benitoite (Princess, Blue, 7.99 x 7.99) vs. 1ct Emerald (Emerald, Green, 8 x 5)
- 2.7ct Ruby (Pear, Red, 10 x 7) vs. 3ct Ruby (Emerald, Red, 9 x 7)
- 1.5ct Tourmaline (Round, Light Red, 7.45 x 7.45) vs. 1.5ct Sapphire (Round, Light Blue, 6.84 x 6.84)