The nine bigger beads are Cornelian, variety of red chalcedony, found in the Kanchana Buri area of Thailand. Dating of the late period of the Thai prehistory called Ban Chiang period (from 300 BC to 200 AD).
Smaller beads are ancient trade winds ceramic beads made in South-Eat Asia from 8th to 14th Century.
The clasp has been casted and hand-knotted in the present time from 9 karat gold.