Description
Kyanite is a polymorph, with 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 crystal structure and is unique in that a crystal may have different hardness levels at various points on the crystal structure.
Pieces are 1-1/2" at their widest point. Most pieces are 3+" long but samples will vary.
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