Kit consisting of 3 bottles of reagent to test 9 K, 14 K and 18 K gold and a touchstone 40 x 46 mm + instructions for use. Spatula cap for precise and economical use. Just apply the spatula on the trace left by the jewel on the touchstone. The reagent acts instantly and you immediately know if it is gold or not. Other bottles or complete kits with or without touchstone to test the different qualities of gold or silver.