cleansing crystals ?? “I have to get up at seven,” I say, even as she’s leading me outside, into the fizz and pop of the rain. “I promised Mom I’d help straighten up before Aunt Jackie gets here.” “Why?” Dara rolls her eyes. “She’ll just bring cleansing crystals with her to do the work. Please,” she adds. She has to raise her voice to be heard over the music; someone has just turned up the volume, and the floor seems to vibrate with its rhythm. “You never come out.” I would like to know what does "bring cleansing crystals with her to do the work" mean, especially for " cleansing crystals ". Thanks.