We have Professional Gold, Silver, Platinum Jewelry Testing Kit with Stone and Box with Product Detail 6 of the finest quality testing acids A strong and sturdy box to keep the acids protected A large stone which allows multiple testings at one time Magnets positioned in the box to keep it closed and secure Instructions for added ease of use . The "Professional Gold, Silver, Platinum Jewelry Testing Kit with Stone and Box" is best product for you. We recommended Professional Gold, Silver, Platinum Jewelry Testing Kit with Stone and Box