Aura coating is a special process where a stone is taken in natural form (in this case kyanite) and then precious metals are bonded to the surface in a permanent coating that elevates the intention of the original stone.  Kyanite is a stone used for protection, dream work, visualization, and communication/conflict.
 
Listing is for 1 blade intuitively chosen by me.  Each blade measures approximately 2.5" long.