4oz Tube Of Zam Buffing Compound Great For Buffing & Cleaning Jewelry. This is a new tube of Zam buffing compound. Great for buffing and cleaning jewelry. It is formulated especially for silver and turquoise jewelry. Will not scratch soft stones such as turquoise. Time saving because stones do not have to be removed before buffing a new pieces. Leaves a high luster without residue. Fast clean up does not cling to or penetrate surface of stones. Versatile, many goldsmiths prefer Zam to rouge as a final finish. The tube contains approximately 4 ounces (113 grams).