HI I DO MAKE DRP and that to with chemical.I make any copper metals. I can make up to 3.5rr and 12mr with Torch test and Watch,& Needle test. The rice will turn brown and black after taking in hands it will turn into dust in 15 seconds.u can wash with Water,Turmeric,Lemon power,,E,W,N,S,BOBBLES,REGIONAL RB.With whatever you like and as many times you want it. Warranty: 15 days.Any one need to mail me OK. Thank you read the add----Avikram220@gmail.com