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0.75ct Apatite (Heart, 6.12×6.12mm, Green) vs 0.75ct Kyanite (Heart, 5.85×5.85mm, Blue)


Quick summary: When looked from above (face-up position), 0.75ct Apatite (6.12×6.12mm, heart cut) appears 9% larger than 0.75ct Kyanite (5.85×5.85mm, heart cut). See below how they compare side-by-side on a ring and finger.

0.75ct Apatite (heart cut)
vs
0.75ct Kyanite (heart cut)
green
 
blue
6.12×6.12 mm 5.85×5.85 mm
actual size
Actual size of 0.75ct Apatite (heart cut, 6.12×6.12mm, Green color)   Actual size of 0.75ct Kyanite (heart cut, 5.85×5.85mm, Blue color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Green 0.75ct Apatite (heart cut, 6.12×6.12mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 0.75ct Kyanite (heart cut, 5.85×5.85mm) 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 35%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 0.75ct Apatite Heart (6.12×6.12mm, Green) and 0.75ct Kyanite Heart (5.85×5.85mm, 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 Apatite for a given carat weight, because it has higher specific gravity (3.68 vs. 3.2 - this means it's "heavier" compared to Apatite 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.


0.75 Ct Apatite (Heart) 0.75 Ct Kyanite (Heart)
6.12×6.12 mm vs 5.85×5.85 mm
26.97 mm²   24.64 mm²
Face-up size outline for 0.75ct Apatite (6.12×6.12mm, heart cut)
Face-up size outline for 0.75ct Kyanite (5.85×5.85mm, heart cut)
0.75ct Apatite Heart (6.12×6.12mm)
0.75ct Kyanite Heart (5.85×5.85mm)
Difference: 9% (2.33 mm²)
0.75ct Apatite (Heart, 6.12×6.12mm) has approx. 9% more face-up area than 0.75ct Kyanite (Heart, 5.85×5.85mm).


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