4ct Sapphire (Pear, 13.18×7.94mm, Blue) vs 2ct Alexandrite (Trillion, 9.09×9.09mm, Bluish Green)
Quick summary: When looked from above (face-up position), 4ct Sapphire (13.18×7.94mm, pear cut) appears 49% larger than 2ct Alexandrite (9.09×9.09mm, trillion cut). See below how they compare side-by-side on a ring and finger.
| 4ct Sapphire (pear cut) |
vs
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2ct Alexandrite (trillion cut) |
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blue |
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| 13.18×7.94 mm | 9.09×9.09 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
4ct Sapphire Pear (13.18×7.94mm, Blue)
and
2ct Alexandrite Trillion (9.09×9.09mm, 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, 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.
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.
| 4 Ct Sapphire (Pear) | 2 Ct Alexandrite (Trillion) | |
| 13.18×7.94 mm | vs | 9.09×9.09 mm |
| 76.39 mm² | 51.23 mm² |
| 4ct Sapphire Pear (13.18×7.94mm) | |
| 2ct Alexandrite Trillion (9.09×9.09mm) | |
| Difference: 49% (25.16 mm²) |
4ct Sapphire (Pear, 13.18×7.94mm) has approx. 49% more face-up area than 2ct Alexandrite (Trillion, 9.09×9.09mm).
Popular comparisons:
- 4ct Sapphire (Pear, Blue, 13.18 x 7.94) vs. 9ct Sapphire (Pear, Blue, 17.28 x 10.41)
- 4ct Sapphire (Pear, Blue, 13.18 x 7.94) vs. 4ct Diamond (Pear, White, 14.36 x 8.65)
- 4ct Sapphire (Pear, Blue, 13.18 x 7.94) vs. 1ct Sapphire (Round, Blue, 5.98 x 5.98)
- 4ct Sapphire (Pear, Blue, 13.18 x 7.94) vs. 4ct Emerald (Pear, Green, 15.02 x 9.05)
- 4ct Sapphire (Pear, Blue, 13.18 x 7.94) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 4ct Sapphire (Pear, Blue, 13.18 x 7.94) vs. 2.4ct Sapphire (Pear, Blue, 11.12 x 6.7)
- 4ct Sapphire (Pear, Blue, 13.18 x 7.94) vs. 0.5ct Diamond (Baguette, White, 5.75 x 3.83)
- 4ct Sapphire (Pear, Blue, 13.18 x 7.94) vs. 16ct Sapphire (Pear, Blue, 20.93 x 12.61)