Chain: 25 inches lightweight silver chain
Pendant: 1.5x0.75 inches.
Material: unknown metal content, stone (turquoise color may be real or dyed Howlite)
Picture is an example, each is extremely similar.
Beautiful and unique handmade Tibetan jewelry made in Nepal and Tibet by Tibetan refugees.
Repoussé refer to a metalworking technique in which a malleable metal is shaped by hammering from the reverse side to create a design in low relief.