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1ct Kyanite (Round, 6.15×6.15mm, Blue) vs 1ct Benitoite (Emerald, 6.59×4.88mm, Blue)


Quick summary: When looked from above (face-up position), 1ct Benitoite (6.59×4.88mm, emerald cut) appears 0.7% larger than 1ct Kyanite (6.15×6.15mm, round cut). See below how they compare side-by-side on a ring and finger.

1ct Kyanite (round cut)
vs
 1ct Benitoite (emerald cut)
blue
 
blue
6.15×6.15 mm 6.59×4.88 mm
actual size
Actual size of 1ct Kyanite (round cut, 6.15×6.15mm, Blue color)   Actual size of 1ct Benitoite (emerald cut, 6.59×4.88mm, Blue color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 1ct Kyanite (round cut, 6.15×6.15mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 1ct Benitoite (emerald cut, 6.59×4.88mm) on a right ring and finger
Your settings
Ring
 Gold
Skin tone
 Light
Ring diameter
 16.9 mm
Ring width
 3.0 mm
Finger length
 64 mm
Finger coverage
 37% vs 29%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 1ct Kyanite Round (6.15×6.15mm, Blue) and 1ct Benitoite Emerald (6.59×4.88mm, 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 slightly smaller than Benitoite for a given carat weight, because it has higher specific gravity (3.68 vs. 3.65 - this means it's "slightly heavier" compared to Benitoite 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 (Round) 1 Ct Benitoite (Emerald)
6.15×6.15 mm vs 6.59×4.88 mm
29.71 mm²   29.91 mm²
Face-up size outline for 1ct Benitoite (6.59×4.88mm, emerald cut)
Face-up size outline for 1ct Kyanite (6.15×6.15mm, round cut)
1ct Kyanite Round (6.15×6.15mm)
1ct Benitoite Emerald (6.59×4.88mm)
Difference: 0.7% (0.2 mm²)
1ct Benitoite (Emerald, 6.59×4.88mm) has approx. 0.7% more face-up area than 1ct Kyanite (Round, 6.15×6.15mm).


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