Fundamental Rockhound Products: 4 oz M5 Polish for Rocks: Tumbling, Cabbing, Flat Laps One 4 oz jar of M5 Final Polish. Excellent for "hard to polish" stones such as opal, jade, sodalite, turquoise Also Excellent for hard stones such as agate, jaspers, petrified woods, quartz NOTICE: You must use a good prepolish to satin finish before using this as a final polish