4.5ct Tanzanite (Oval, 13.43×8.95mm, Blue) vs 4.5ct Kyanite (Oval, 13.02×8.68mm, Blue)
Quick summary: When looked from above (face-up position), 4.5ct Tanzanite (13.43×8.95mm, oval cut) appears 6% larger than 4.5ct Kyanite (13.02×8.68mm, oval cut). See below how they compare side-by-side on a ring and finger.
| 4.5ct Tanzanite (oval cut) |
vs
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4.5ct Kyanite (oval cut) |
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blue |
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| 13.43×8.95 mm | 13.02×8.68 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
4.5ct Tanzanite Oval (13.43×8.95mm, Blue)
and
4.5ct Kyanite Oval (13.02×8.68mm, 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.
| 4.5 Ct Tanzanite (Oval) | 4.5 Ct Kyanite (Oval) | |
| 13.43×8.95 mm | vs | 13.02×8.68 mm |
| 98.56 mm² | 92.67 mm² |
| 4.5ct Tanzanite Oval (13.43×8.95mm) | |
| 4.5ct Kyanite Oval (13.02×8.68mm) | |
| Difference: 6% (5.89 mm²) |
4.5ct Tanzanite (Oval, 13.43×8.95mm) has approx. 6% more face-up area than 4.5ct Kyanite (Oval, 13.02×8.68mm).
Popular comparisons:
- 1ct Tanzanite (Oval, Blue, 8.07 x 5.38) vs. 1ct Morganite (Oval, Light Purple, 8.63 x 5.75)
- 2ct Tanzanite (Oval, Blue, 10.16 x 6.77) vs. 2ct Diamond (Oval, White, 10.23 x 6.82)
- 2.5ct Tanzanite (Oval, Blue, 10.95 x 7.3) vs. 2ct Diamond (Oval, White, 10.23 x 6.82)
- 4.5ct Tanzanite (Oval, Blue, 12 x 10) vs. 5ct Tanzanite (Cushion, Blue, 12 x 8)
- 1ct Tanzanite (Oval, Blue, 8.07 x 5.38) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 20ct Tanzanite (Oval, Blue, 21.89 x 14.59) vs. 20.5ct Tanzanite (Oval, Blue, 22.07 x 14.71)
- 1ct Tanzanite (Oval, Blue, 8.07 x 5.38) vs. 2ct Sapphire (Oval, Blue, 9.53 x 6.35)
- 0.8ct Tanzanite (Oval, Blue, 7.49 x 4.99) vs. 1.3ct Tanzanite (Round, Blue, 6.96 x 6.96)
- 1ct Tanzanite (Oval, Blue, 8.07 x 5.38) vs. 1ct Diamond (Oval, White, 8.12 x 5.41)