Seraphinite is a material famed for its chatoyant, feathery forms. It's a formation pattern of clinochlore, which is itself a kind of serpentine - but it can and frequently does occur as seams in deposits of other types of serpentine. This piece from the Hokitika River is an example of seraphinite that existed as a seam on the side of a serpentine boulder, and it shows strong edge chatoyancy as well as a deep, grey-green body tone and circular bursts of feathery chatoyancy.
 
Measuring in at 59mm long and 36mm wide at its widest point, this piece shows an equally vivid though non-chatoyant pattern on its obverse side, allowing it to effectively be worn as two very different yet equally attractive piece depending on the wearer's personal tastes or desires in the moment. It's a wonderful example of the material, and is most definitely a piece that suits fancy attire.