The central stand is called a stambha and is often decorated with an elephant or peacock although left plain in this case. A peacock perches at the rim of the oil reservoir ready to drink. It faces two lingams, phallic symbols of Lord Shiva. The rim is formed in the shape of a yoni, a stylized representation of female genitalia.
These oil lamps are found almost exclusively in Chhattisgarh and are made by Dokra Damar tribes, the traditional metalsmiths of West Bengal. The dhokra technique of lost wax casting is named after their tribe.
Dokra also spelled Dhokra- is a brass or bronze casting made using the lost wax technique. The process is commonly known as 'lost wax .' The object to be cast is sculpted from beeswax mixed with a little oil. Once finished the entire figure is coated with clay made from termite hills to create the mould. The mould is dried and fired in an oven with cow-dung cakes. The wax melts leaving an empty clay mould in the shape to be cast. The mould is then heated and molten brass or bronze is poured into the empty clay-mould. Once cool, the clay mould is broken exposing the cast bronze figure. The casting is then cleaned and finer details are carved to finish the piece.
In turn, the lamp has become a sacred object and no ritual, prayer or festival can begin without it being lit.