1 Ct Tanzanite (Round) |
vs
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1 Ct Alexandrite (Round) |
dark blue |
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6.37×6.37 mm | 6.14×6.14 mm | |
actual size | ||
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Actual size is set for screen
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64 mm |
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Actual sizes of
1ct Tanzanite Round (6.37×6.37mm, Dark Blue)
and
1ct Alexandrite Round (6.14×6.14mm, Dark 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 and high-end gemstone jewelry, look at:
James Allen → quality gemstones (Rubies, Sapphires, Emeralds) and especially Diamonds
Blue Nile → gemstones and diamonds, birthstones jewelry
Brian Gavin → nice selection of gemstones, top-end signature diamonds
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, Dark Blue, 6.37 x 6.37) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 1ct Tanzanite (Round, Dark Blue, 6.37 x 6.37) vs. 1ct Alexandrite (Round, Light Green , 6.14 x 6.14)
- 1ct Tanzanite (Round, Dark Blue, 6.37 x 6.37) vs. 1ct Alexandrite (Round, Violet, 6.14 x 6.14)
- 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)
- 1.5ct Tanzanite (Round, Blue, 7.3 x 7.3) vs. 1.5ct Diamond (Round, White, 7.44 x 7.44)
- 1ct Tanzanite (Round, Blue, 6.37 x 6.37) vs. 1ct Emerald (Round, Green, 6.37 x 6.37)
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.