This product is hand made.
The bases: Oiled thread, macrame and precious materials (3 micron gold plated/gold/precious and semi-precious stones).
All the materials, all the stones come from Jaipur in India. Virtually all semi-precious stones are designed to be worn in water. The jewels do not move and everything is anti-allergic. However, it is strongly discouraged to wear stone necklaces to sleep.