7.5ct Tanzanite (Pear, 17.66×10.64mm, Blue) vs 7.5ct Kyanite (Pear, 17.11×10.31mm, Blue)
Quick summary: When looked from above (face-up position), 7.5ct Tanzanite (17.66×10.64mm, pear cut) appears 7% larger than 7.5ct Kyanite (17.11×10.31mm, pear cut). See below how they compare side-by-side on a ring and finger.
| 7.5ct Tanzanite (pear cut) |
vs
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7.5ct Kyanite (pear cut) |
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blue |
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| 17.66×10.64 mm | 17.11×10.31 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
7.5ct Tanzanite Pear (17.66×10.64mm, Blue)
and
7.5ct Kyanite Pear (17.11×10.31mm, 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, Kyanite will face-up smaller than Tanzanite for a given
carat weight, because it has higher specific gravity
(3.68 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.
| 7.5 Ct Tanzanite (Pear) | 7.5 Ct Kyanite (Pear) | |
| 17.66×10.64 mm | vs | 17.11×10.31 mm |
| 137.17 mm² | 128.77 mm² |
| 7.5ct Tanzanite Pear (17.66×10.64mm) | |
| 7.5ct Kyanite Pear (17.11×10.31mm) | |
| Difference: 7% (8.4 mm²) |
7.5ct Tanzanite (Pear, 17.66×10.64mm) has approx. 7% more face-up area than 7.5ct Kyanite (Pear, 17.11×10.31mm).
Popular comparisons:
- 0.6ct Tanzanite (Pear, Blue, 6 x 4.8) vs. 0.37ct Diamond (Oval, Yellow, 5.82 x 3.88)
- 15ct Tanzanite (Pear, Blue, 21.85 x 13.16) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 1ct Tanzanite (Pear, Blue, 8.85 x 5.33) vs. 1ct Diamond (Pear, White, 9.05 x 5.45)
- 2ct Tanzanite (Pear, Blue, 11.16 x 6.72) vs. 2ct Diamond (Pear, White, 11.4 x 6.87)
- 1.57ct Tanzanite (Pear, Blue, 10.29 x 6.2) vs. 1.8ct Sapphire (Oval, Blue, 9.2 x 6.13)
- 1.57ct Tanzanite (Pear, Blue, 10.29 x 6.2) vs. 2ct Tanzanite (Pear, Blue, 11.16 x 6.72)
- 4.3ct Tanzanite (Pear, Blue, 14.39 x 8.67) vs. 1ct Tanzanite (Emerald, Blue, 6.8 x 5.04)
- 1.55ct Tanzanite (Pear, Blue, 10.24 x 6.17) vs. 5ct Tanzanite (Pear, Blue, 15.14 x 9.12)
- 1.57ct Tanzanite (Pear, Blue, 10.29 x 6.2) vs. 1.57ct Tanzanite (Marquise, Blue, 12.24 x 6.12)