6ct Tanzanite (Emerald, 12.37×9.16mm, Blue) vs 6ct Alexandrite (Emerald, 11.91×8.82mm, Light Green )
Quick summary: When looked from above (face-up position), 6ct Tanzanite (12.37×9.16mm, emerald cut) appears 8% larger than 6ct Alexandrite (11.91×8.82mm, emerald cut). See below how they compare side-by-side on a ring and finger.
| 6ct Tanzanite (emerald cut) |
vs
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6ct Alexandrite (emerald cut) |
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blue |
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| 12.37×9.16 mm | 11.91×8.82 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
6ct Tanzanite Emerald (12.37×9.16mm, Blue)
and
6ct Alexandrite Emerald (11.91×8.82mm, Light 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 Tanzanite for a given
carat weight, because it has higher specific gravity
(3.73 vs. 3.35 - this means it's "heavier" compared to Tanzanite 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.
| 6 Ct Tanzanite (Emerald) | 6 Ct Alexandrite (Emerald) | |
| 12.37×9.16 mm | vs | 11.91×8.82 mm |
| 105.38 mm² | 97.69 mm² |
| 6ct Tanzanite Emerald (12.37×9.16mm) | |
| 6ct Alexandrite Emerald (11.91×8.82mm) | |
| Difference: 8% (7.69 mm²) |
6ct Tanzanite (Emerald, 12.37×9.16mm) has approx. 8% more face-up area than 6ct Alexandrite (Emerald, 11.91×8.82mm).
Popular comparisons:
- 6ct Tanzanite (Emerald, Blue, 12.37 x 9.16) vs. 13ct Tanzanite (Emerald, Blue, 16.01 x 11.86)
- 6ct Tanzanite (Emerald, Blue, 12.37 x 9.16) vs. 8ct Tanzanite (Emerald, Blue, 13.62 x 10.09)
- 6ct Tanzanite (Emerald, Blue, 12.37 x 9.16) vs. 12.5ct Tanzanite (Emerald, Blue, 15.8 x 11.7)
- 6ct Tanzanite (Emerald, Blue, 12.37 x 9.16) vs. 1.5ct Tanzanite (Emerald, Blue, 7.79 x 5.77)
- 6ct Tanzanite (Emerald, Blue, 12.37 x 9.16) vs. 1ct Diamond (Cushion, White, 5.83 x 5.83)
- 6ct Tanzanite (Emerald, Blue, 12.37 x 9.16) vs. 10ct Tanzanite (Emerald, Blue, 14.67 x 10.87)
- 2ct Tanzanite (Emerald, Blue, 8.57 x 6.35) vs. 3ct Tanzanite (Emerald, Blue, 9.81 x 7.27)
- 1ct Tanzanite (Emerald, Blue, 6.8 x 5.04) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)