Each pet charm is securely made of real silver & can be attached to any collar with the small keychain loop included. Measures appx .8" & weighs appx 2g. 
 
Pet charms we're created with the intention of bringing protection & light to your companions. Crystal energies are not meant to replace professional medical treatments for you or your pets.
 
Tourmaline is traditionally used to protect from negative energy both environmental & emotional. It is espeically beneficial for dogs because of their natural ability to pick up on peoples energies. Black Tourmaline acts like a protective field shielding the animal from harmful influences. It can help balance & regulate hormone levels which helps animals cope with stress & faster heal from abuse, trauma, acting frightened, withdrawn or reluctant of people.