Trillium

From Memory Alpha, the free Star Trek reference.

You may also be looking for trillium 323.

Trillium is a substance that is regularly being traded in the 23rd and 24th century.

In 2267, Spock posed as a trader of kevas and trillium while on Organia. (TOS: "Errand of Mercy")

Later, in 2373, Arne Darvin made the same claim while aboard the USS Defiant. (DS9: "Trials and Tribble-ations")