These high quality bone pendants are made from domesticated water buffalo bone.
You will not receive the exact pieces shown in the photos but ones similar. There is some variation from piece to piece as these are all hand carved.
The Tree of Peace bone pendants are approximately 4.5" long by 1.5" wide. In metric, this is approximately 11.43 cm long by 3.81 cm wide.
Domesticated water buffalo are not endangered.