In Nepal Vadjras are kept around the house to bring good luck and ward of evil. The Vajra is known to be the destroyer of evil and the mineral Quartz is known to cleans the energy around it. It can help people tap into higher intuitive thinking and receive intuitive information. Also known as the thunderbolt or diamond.
The thunderbolt was originally the symbol of the Hindu rain god Indra and was employed by the 8th-century Tantric (esoteric) master Padmasambhara to conquer the non-Buddhist deities of Tibet. Like the diamond the vajra destroys but is itself indestructible and is thus likened to śūnya (the all-inclusive void).