5ct Kyanite (Marquise, 17.36×8.68mm, Blue) vs 5ct Tanzanite (Marquise, 18×9mm, Blue)
Quick summary: When looked from above (face-up position), 5ct Tanzanite (18×9mm, marquise cut) appears 8% larger than 5ct Kyanite (17.36×8.68mm, marquise cut). See below how they compare side-by-side on a ring and finger.
| 5ct Kyanite (marquise cut) |
vs
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5ct Tanzanite (marquise cut) |
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blue |
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| 17.36×8.68 mm | 18×9 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
5ct Kyanite Marquise (17.36×8.68mm, Blue)
and
5ct Tanzanite Marquise (18×9mm, 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.
| 5 Ct Kyanite (Marquise) | 5 Ct Tanzanite (Marquise) | |
| 17.36×8.68 mm | vs | 18×9 mm |
| 106.99 mm² | 115.02 mm² |
| 5ct Kyanite Marquise (17.36×8.68mm) | |
| 5ct Tanzanite Marquise (18×9mm) | |
| Difference: 8% (8.03 mm²) |
5ct Tanzanite (Marquise, 18×9mm) has approx. 8% more face-up area than 5ct Kyanite (Marquise, 17.36×8.68mm).
Popular comparisons:
- 2ct Kyanite (Marquise, Blue, 12.78 x 6.39) vs. 5ct Ruby (Round, Red, 10.22 x 10.22)
- 10ct Kyanite (Marquise, Dark Bluish Green, 21.86 x 10.93) vs. 10ct Emerald (Marquise, Green, 24.24 x 12.12)
- 1ct Kyanite (Marquise, Blue, 10.14 x 5.07) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 1.5ct Kyanite (Marquise, Blue, 11.62 x 5.81) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 2ct Kyanite (Marquise, Blue, 12.78 x 6.39) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 2.5ct Kyanite (Marquise, Blue, 13.78 x 6.89) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 2.7ct Ruby (Pear, Red, 10 x 7) vs. 3ct Ruby (Emerald, Red, 9 x 7)
- 1.5ct Tourmaline (Round, Light Red, 7.45 x 7.45) vs. 1.5ct Sapphire (Round, Light Blue, 6.84 x 6.84)