Soil taken from 7 City Pillars. In each province of Thailand, an auspicious city pillar is built to protect the area. The pillar is usually built inside a pavilion or a shade. Soil from the surrounding area can be harvested, and combined with other materials to craft amulets. It is believed that this imbues the amulets with, particularly potent powers.
The number 7 is representative of mystical powers. 7 can be used to make love magic (for example love relationships face changes in the 7th year) or Mongkhun (auspicious) purposes.