5 pcs Authentic Shungite Stickers Polished 20 mm / 0.78" Genuine Healing Energy Stone Protection Plate for Cell Phone Case Tablet Laptop Computer Noble Gemstone Protector Crystal

Did not work for me for what I wanted it for, otherwise okay product.

I I think it’s good. It’s hard to tell but I was told that these work so I always keep one on my phone.

I bought one pack and wanted to put two of these on my cell phone. They are too thick for a cell phone case so I used them on all my laptops/desktop computers. I ended up ordering another set because I have 4 computers in my home and also decided I wanted to put these on router and printer, microwave... basically anything that gives off EMF. Note: they stick really hard so if I had to do it again I'd leave the sticker on and then see if it works for your cell case first, otherwise you will have to DIG it off if it's not working in that particular spot.

Impressed that it is still sticking to my phone-case 2 months after putting it on there. Hopeful that it is helping to block emf.

I used it on the back of my cell phone and my laptop for EMF's.