if you keep feeling it has some attachment to evil or black magic/
black tourmaline will negate that.
hold or carry with you a piece of black tourmaline as you work to cleanse your new crystal.
the fact is.. crystals are meant for good/ & healing & learning etc positives..
so it is inherent in the crystals to beg to be restored to it's rightful nature..
it is trusting you to help it regain its proper identity.