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natural-beads / Kyanite

Ball of Kianite of 12 mm quality A

All dimensions are approximate in millimeter

Ref: 296A002
Ball Kianite 4 mm

Ball Kianite 4 mm

1 units for packet

0.16 €

6-11

0.16 €

> 12

0.15 €

 

Kyanite is a polymorph with two other minerals; andalusite and sillimanite. A polymorph is a mineral that shares the same chemistry but a different crystal structure with another, or other, minerals. Kyanite is an attractive mineral that has a near sapphire like blue color in some especially nice specimens. Kyanite has a unique characteristic in that it has a wide variation in hardness, in the same crystal. The hardness of kyanite is approximately 4.5 when scratched parallel to the long axis of the crystal and approximately 6.5 when scratched perpendicular to or across the long axis
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