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1 Ct Kyanite (Oval)

vs

1 Ct Tanzanite (Oval)

blue
 
blue
7.77×5.18 mm 8.07×5.38 mm
actual size
Actual size of 1ct Kyanite   Actual size of 1ct Tanzanite
 
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Ring: Skin tone:
Ring width: 3.0 mm
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Left finger image
Ring on left finger
Blue 1ct Kyanite on a ring
64 mm
Right finger image
Ring on a right finger
Blue 1ct Tanzanite on a ring
Your settings
Ring
Gold
Skin tone
Light
Ring diameter
16.9 mm
Ring width
3.0 mm
Finger length
64 mm
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Ring diameter: 16.9 mm
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Actual sizes of 1ct Kyanite Oval (7.77×5.18mm, Blue) and 1ct Tanzanite Oval (8.07×5.38mm, 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.

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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. 3.3 - 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.


1 Ct Kyanite (Oval) 1 Ct Tanzanite (Oval)
7.77×5.18 mm vs 8.07×5.38 mm
33 mm²   35.6 mm²
Face-up size outline
Face-up size outline
1ct Kyanite Oval (7.77×5.18mm)
1ct Tanzanite Oval (8.07×5.38mm)
Difference: 8% (2.6 mm²)
1ct Tanzanite Oval (8.07×5.38mm) has approx. 8% more face-up area than 1ct Kyanite Oval (7.77×5.18mm).


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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.