In 2002 the FIPJP began certifying non-wooden "synthetic" or "resin" jacks, and in 2013 began certifying synthetic jacks capable of being picked up by a magnet. In 2016, however, synthetic jacks were effectively outlawed because of their weight. For a review of the evolution of the rules governing the jack, see https://petanquerules.wordpress.com/2015/02/15/evolution-of-the-jack/
