Set of 12 - Yin Yang Cord Necklace, Best Friend Necklaces, Yin Yang Pendant Necklace Taiji Costume Jewelry. ATTRACTIVE NECKLACE : An attractive necklace bearing a Yin -Yang pendant hanging on a 17 black leather cord. It is non-adjustable and fastens with an easy open push closure. SYMBOLIZE : It senses a symbol of continual movement of these two energies, yin to yang and yang to yin, just as things expand and contract, and temperature changes from hot to cold. CORD : The cord is accented with metal springs and beads that meet in the center just above the pendant. YING YANG PENDANT : Yin Yang pendant is a beloved symbol that represents the ancient Chinese understanding of how things work. The outer encompassing circle represents "everything", while the dark and light shapes within the circle represent the interaction of two energies, called "yin" (dark) and "yang" (light), which cause everything to happen. SIZE : Pendant is approximately 3/4 inch in diameter. Black leather cord is of 17".