Yup. Its done in industrial ovens anyway. The frying pan one was just mild heating. You need to heat way over 500 degrees to melt cobalt chloride. You need to heat over 1000 degrees to melt sillica FIRST, to liberate the CoCl2 inside. Oven temp, if i dun recall wrongly was 170 degrees C.You sure you and your family are not inhaling any of this when you are heating it?