Off white cord (If tassel is ordered: matching colour)
Bone is used in practice because the more we contemplate death the more fruitful our life becomes. We begin to live life differently and accept that death is inevitable while the path to the end of this life is about service to others, loving all, and being happy (without the pursuit of happiness) in each moment...through the supposed good and bad.
Yak is an important animal in Tibet as they are used as packing animals for the nomadic tribes and to honour their passing they are used in practice. Continuing to be of service as they pass from this consciousness to another.