Raw amber vs polished amber?

Polished amber does contain succinic acid and still could relieve some pain, but raw amber is the untreated and unprocessed form of amber that is highest in succinic acid. Succinic acid is more easily absorbed through the skin when raw amber is used. Polished amber is heat treated and pressure treated to strip off the outer amber layers where most of the succinic acid is contained. This means that raw amber will have the highest levels of succinic acid.