There is really no rule that works deters you from buying a whole jewelry store with the 7 chakra bracelets. You can put on as many as you want on whichever side you want. However, this doesn`t mean that the energy will be quadrupled ten-folds with more chakra healing bracelets. Black Agate, like all black stones, is a grounding and protective crystal. It gives a calming peace that helps those during a period of bereavement. Black Agate gives inner strength to move on and is also very helpful in keeping the peace in stressful households. The Hamsa Hand is an ancient Middle Eastern amulet symbolizing the Hand of God. ... The wearer of the hamsa hand can wear it facing up or down and it is believed to give the owner success, harmony, and protection from the ?Ayin Ha`ra,? also known as The Evil Eye. Shop for Seven Chakra Hamsa Bracelet With Black Agate.