Bests & Worsts Reviews from Amazon

lapis lazuli has pyrite which releases heavy metals including arsenic and is toxic for humans. Infused in water or oil and absorbed is super dangerous. I bought this and I'm disappointed that the company didn't research the stones to be put in the rollers. The others all are fine and I love this concept. But the Lapis Lazuli needs to be removed. Any quartz based crystal would be great. If they did that, I'd give it 5 stars! I just can't endorse with the problems that can be caused by the blue stones.