1ct Alexandrite (Trillion, 7.21×7.21mm, Bluish Green) vs 1ct Sapphire (Trillion, 7.03×7.03mm, Blue)
Quick summary: When looked from above (face-up position), 1ct Alexandrite (7.21×7.21mm, trillion cut) appears 5% larger than 1ct Sapphire (7.03×7.03mm, trillion cut). See below how they compare side-by-side on a ring and finger.
| 1ct Alexandrite (trillion cut) |
vs
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1ct Sapphire (trillion cut) |
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bluish green |
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| 7.21×7.21 mm | 7.03×7.03 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
1ct Alexandrite Trillion (7.21×7.21mm, Bluish Green)
and
1ct Sapphire Trillion (7.03×7.03mm, 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.
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 Ct Alexandrite (Trillion) | 1 Ct Sapphire (Trillion) | |
| 7.21×7.21 mm | vs | 7.03×7.03 mm |
| 32.23 mm² | 30.64 mm² |
| 1ct Alexandrite Trillion (7.21×7.21mm) | |
| 1ct Sapphire Trillion (7.03×7.03mm) | |
| Difference: 5% (1.59 mm²) |
1ct Alexandrite (Trillion, 7.21×7.21mm) has approx. 5% more face-up area than 1ct Sapphire (Trillion, 7.03×7.03mm).
Popular comparisons:
- 1ct Alexandrite (Trillion, Bluish Green, 7.21 x 7.21) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1ct Alexandrite (Trillion, Bluish Green, 7.21 x 7.21) vs. 1ct Diamond (Trillion, White, 7.74 x 7.74)
- 1ct Alexandrite (Trillion, Bluish Green, 7.21 x 7.21) vs. 1ct Emerald (Trillion, Green, 8.01 x 8.01)
- 1ct Alexandrite (Trillion, Bluish Green, 7.21 x 7.21) vs. 2ct Alexandrite (Cushion, Bluish Green, 8 x 6)
- 1ct Alexandrite (Trillion, Bluish Green, 7.21 x 7.21) vs. 1ct Beryl (Trillion, Orange, 8.01 x 8.01)
- 1ct Alexandrite (Trillion, Bluish Green, 7.21 x 7.21) vs. 1ct Alexandrite (Emerald, Bluish Green, 8 x 5)
- 1ct Alexandrite (Trillion, Bluish Green, 7.21 x 7.21) vs. 1ct Emerald (Cushion, Green, 6.37 x 6.37)
- 1ct Alexandrite (Trillion, Bluish Green, 7.21 x 7.21) vs. 1ct Alexandrite (Cushion, Bluish Green, 5.74 x 5.74)