Tulsi (basil) wood, is considered most sacred of all wood in the Hindu religion. In many places in India, tulsi tree is worshipped as goddess.
Tulsi plant is also used in a lot of ayurvedic medicine and is considered good for throat disease.
Tulsi mala is used for either worshipping hindu gods or can be worn by an individual.
It is also believed that wearing this mala provides peace of mind and reduces stress.