Because of the Dark Demise, the interest for petition mat expanded significantly. A large number of the early beads were produced using valuable metals like gold and silver. In the seventeenth century beads started to be produced using less expensive substances, like coral and glass. Moreover, there were a few beads made of wood that were famous during this time. This new material was alluded to as wood beads, and the cycle for making them became known as broiling the wood.