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0.75ct Apatite (Round, 5.85×5.85mm, Green) vs 0.75ct Kyanite (Round, 5.58×5.58mm, Blue)


Quick summary: When looked from above (face-up position), 0.75ct Apatite (5.85×5.85mm, round cut) appears 10% larger than 0.75ct Kyanite (5.58×5.58mm, round cut). See below how they compare side-by-side on a ring and finger.

0.75ct Apatite (round cut)
vs
 0.75ct Kyanite (round cut)
green
 
blue
5.85×5.85 mm 5.58×5.58 mm
actual size
Actual size of 0.75ct Apatite (round cut, 5.85×5.85mm, Green color)   Actual size of 0.75ct Kyanite (round cut, 5.58×5.58mm, 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 (round cut, 5.85×5.85mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 0.75ct Kyanite (round cut, 5.58×5.58mm) 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
 35% vs 34%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 0.75ct Apatite Round (5.85×5.85mm, Green) and 0.75ct Kyanite Round (5.58×5.58mm, 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 (Round) 0.75 Ct Kyanite (Round)
5.85×5.85 mm vs 5.58×5.58 mm
26.88 mm²   24.45 mm²
Face-up size outline for 0.75ct Apatite (5.85×5.85mm, round cut)
Face-up size outline for 0.75ct Kyanite (5.58×5.58mm, round cut)
0.75ct Apatite Round (5.85×5.85mm)
0.75ct Kyanite Round (5.58×5.58mm)
Difference: 10% (2.43 mm²)
0.75ct Apatite (Round, 5.85×5.85mm) has approx. 10% more face-up area than 0.75ct Kyanite (Round, 5.58×5.58mm).


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