9 Carat Kyanite (Cushion, 11.84×11.84mm, Blue)
Color:
Actual size is set for screen
How big is a 9 carat cushion-cut Kyanite?
It depends on the cut parameters and length-to-width ratio, but a typical size of a 9ct square cushion-cut Kyanite would be around 11.84×11.84 mm (±6%). Check how big it looks on a ring and finger.
Ring:
Skin tone:
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Ring width:
3.0 mm
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Saved...
64 mm
| Your settings | |
|---|---|
Ring |
Gold |
Skin tone |
Light |
Ring diameter |
16.9 mm |
Ring width |
3.0 mm |
Finger length |
64 mm |
Finger coverage |
71 % |
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Saved...
|
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Ring diameter:
16.9 mm
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Additional Info
Kyanite got its name from the Greek word "kyanos", which simply means "blue". Gems with intense sapphire blue color are the most valuable. One peculiarity about Kyanite is that depending on crystallographic direction, it has two different hardnesses (7 and 4.5).
Where to buy?
For certified gemstones, high-end gemstone jewelry, and birthstone jewelry, see Blue Nile
Gem Details
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Name:
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Kyanite |
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Shape:
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Cushion |
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Chemical Formula:
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Al2SiO5 |
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Crystal Structure:
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Triclinic |
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Hardness:
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4.5-7 |
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Specific Gravity
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3.68 |
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Carat weight:
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9 ct |
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Gram weight:
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1.8 g (0.0635 ounces) |
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Points:
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900 pts |
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Length:
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11.84 mm |
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Width:
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11.84 mm |
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Est. face-up size:
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126.17 mm² |
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Volume:
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489.13 mm³ |
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Length-to-width ratio:
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1 |
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Refractive Index:
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1.710 - 1.735 |
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Luster:
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Vitreous,Pearly |
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Wearability:
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Very good |
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Care Instructions:
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Should be treated gently |
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Color:
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Kyanite can be found in the following colors:
    
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Birthstone:
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Kyanite is not an official birthstone of any month |
Popular comparisons:
- 1.5ct Kyanite (Cushion, Blue, 6.58 x 6.58) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 2ct Kyanite (Cushion, Blue, 7.24 x 7.24) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 20ct Kyanite (Cushion, Blue, 15.61 x 15.61) vs. 20ct Morganite (Cushion, Light Purple, 17.3 x 17.3)
- 2.58ct Kyanite (Cushion, Blue, 7.89 x 7.89) vs. 3ct Tanzanite (Emerald, Blue, 9.81 x 7.27)
- 1ct Kyanite (Cushion, Blue, 5.75 x 5.75) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 2ct Kyanite (Cushion, Blue, 7.24 x 7.24) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 2.5ct Kyanite (Cushion, Blue, 7.8 x 7.8) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 2.7ct Ruby (Pear, Red, 10 x 7) vs. 3ct Ruby (Emerald, Red, 9 x 7)