Vulcanite is, according to Maggie Campbell
Pedersen, “the most common of the jet
simulants…..also known as ‘ebonite’ and is
regarded as an early plastic (Pedersen,
2003).” It is made from vulcanized rubber. It,
like French jet, could be mass produced very
cheaply. It is opaque and deep black, but the
color fades with age, and most pieces today
are greenish-brown (Pedersen, 2003).