Buddha Vairochana is regarded as one of the five Dhyani Buddha in Nepalese-Tibetan Buddhism.
He represents the cosmic element of Rupa (form). His two hands are held against the chest with the tips of the thumbs and forefingers of each hand united.
This mudra is called Dharmachakra Mudra which is the gesture of Teaching. Literally, Dharma means “Law” and Chakra means wheel and usually interpreted turning the Wheel of Law.
It is also a gesture of hands exhibited by Lord Buddha while preaching his first sermon at Sarnath.
It is painted in golden color and parts are 24 k gold. Other colors are stone and water paints with a black background.