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carat vs. color  length*  width*
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1 Ct Kyanite (Oval)

vs

1 Ct Alexandrite (Round)

dark bluish green
 
bluish green
8.14×6.14 mm 6.14×6.14 mm
actual size
Actual size of 1ct Kyanite   Actual size of 1ct Alexandrite
 
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Ring: Skin tone:
Ring width: 3.0 mm
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Left finger image
Ring on left finger
Dark Bluish Green 1ct Kyanite on a ring
64 mm
Right finger image
Ring on a right finger
Bluish Green 1ct Alexandrite 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 (8.14×6.14mm, Dark Bluish Green) and 1ct Alexandrite Round (6.14×6.14mm, 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 Kyanite or Alexandrite check what Amazon has to offer. You'll usually find quite a selection from many different vendors. Worth a check. For other high quality gemstones (Rubies, Saphhires, Emeralds) and especially Diamonds, I highly recommend JamesAllen.

Face-up Size

All things being equal, Alexandrite will face-up slightly smaller than Kyanite for a given carat weight, because it has higher specific gravity (3.7 vs. 3.68 - this means it's "slightly heavier" compared to Kyanite 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 Alexandrite (Round)
8.14×6.14 mm vs 6.14×6.14 mm
40.98 mm²   29.61 mm²
Face-up size outline
Face-up size outline
1ct Kyanite Oval (8.14×6.14mm)
1ct Alexandrite Round (6.14×6.14mm)
Difference: 38% (11.37 mm²)
1ct Kyanite Oval (8.14×6.14mm) has approx. 38% more face-up area than 1ct Alexandrite Round (6.14×6.14mm).


Popular comparisons:

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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.