1 Ct Tanzanite (Round) |
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1 Ct Alexandrite (Round) |
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blue |
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| 6.37×6.37 mm | 6.14×6.14 mm | |
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Actual size is set for screen
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Ring width: 3.0 mm
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64 mm |
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Actual sizes of
1ct Tanzanite Round (6.37×6.37mm, Blue)
and
1ct Alexandrite Round (6.14×6.14mm, Dark Violet)
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 Tanzanite or Alexandrite check what Amazon has to offer. You'll usually find quite a selection from many different vendors. Worth a check. For other high quality gemstones (Rubies, Saphhires, Emeralds) and especially Diamonds, I highly recommend JamesAllen.
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
(3.7 vs. 3.3 - 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.
| 1 Ct Tanzanite (Round) | 1 Ct Alexandrite (Round) | |
| 6.37×6.37 mm | vs | 6.14×6.14 mm |
| 31.87 mm² | 29.61 mm² |
| 1ct Tanzanite Round (6.37×6.37mm) | |
| 1ct Alexandrite Round (6.14×6.14mm) | |
| Difference: 8% (2.26 mm²) |
1ct Tanzanite Round (6.37×6.37mm) has approx. 8% more face-up area than 1ct Alexandrite Round (6.14×6.14mm).
Popular comparisons:
- 1ct Tanzanite (Round, Blue, 6.37 x 6.37) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 1ct Tanzanite (Round, Blue, 6.37 x 6.37) vs. 1ct Alexandrite (Round, Light Green , 6.14 x 6.14)
- 1ct Tanzanite (Round, Blue, 6.37 x 6.37) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1ct Tanzanite (Round, Blue, 6.37 x 6.37) vs. 1ct Emerald (Round, Green, 6.37 x 6.37)
- 1ct Tanzanite (Round, Blue, 6.37 x 6.37) vs. 1ct Morganite (Round, Light Purple, 6.82 x 6.82)
- 1ct Tanzanite (Round, Blue, 6.37 x 6.37) vs. 0.2ct Diamond (Oval, Blue, 4.74 x 3.16)
- 1ct Tanzanite (Round, Blue, 6.37 x 6.37) vs. 1ct Emerald (Round, Green, 6.82 x 6.82)
- 1ct Tanzanite (Round, Blue, 6.37 x 6.37) vs. 1ct Sapphire (Round, Blue, 5.98 x 5.98)
- 1ct Tanzanite (Round, Blue, 6.37 x 6.37) vs. 1.2ct Diamond (Round, White, 6.91 x 6.91)
Enter your screen size (diagonal)
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Actual size is currently adjusted to screen.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.