Vintage, ethnic bangle of bone (camel or cow) from the Middle Stone or India with large green stone and mounting of white metal / silver

Vintage, ethnic bangle/bracelet made of bone (camel or cow) from the Middle Stone or India with large green gemstone and white metal/spotted silver mounting. Can be opened and closed by locking with a stick that is fixed in the bracelet. 20th century. Weight: Approximately 119 grams. Inner diameter: Approximately 6 centimeters. Measurements on gemstone: Approximately 3.7 x 2.8 centimetres. Normal traces of use.