I took some old silver necklaces melted them down,and cast me this bull skull ring,sorry its not for sale,but i will make you one if you message me. The goldish tone,that came from a pin head size piece of brass in the crucible i didn't see,before smelting. Now i know and have crucibles for each type of precious metal i smelt. This was done in a and cast mold. Investment casting starts next month,as soon as i get an investment casting pump.