Necklace Japanese Satsuma & Coral

This 21" necklace features a 1.5" antique shard of Japanese Satsuma porcelain, set in sterling.  I have encorporated it with carved 14mm Heinan coral and 10mm onyx beads.  The necklace is 21" in length including the magnetic clasp.  I have  strung it on black thread with a knot between each bead.  It is one of a kind.