My EMF Meter displayed no difference!
My EMF meter showed no difference in the EMF blocking abilities of this product.  Although it may change whatever negative energy into positive energy, except I have no hard evidence for this.  I'm giving this 3 stars because its a nice looking product that they also include a necklace of "black tourmaline".  So if you're purchasing this in hopes of it blocking EMF I'd suggest you look elsewhere but if you're purchasing this for a nice looking rock to set on your desk as a decoration or a paper weight, then this is the buy for you. =]
Rating: 3 stars