This mala and bracelet represents the beautiful Mother Nature. It's finished by a Black Zebra Jasper pendant in which I see tree branches. It always amazes me how nature reflects everything. 
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. 
Rainbow obsidian works by grounding out negativity to let light in. It is useful when used to help soften and ease the effects of shock or fear. Obsidian is said to help protect the over sensitive against depression. Rainbow Obsidian is said to bring love, joy and light into your life. 
Jasper is a very calming stone and stimulates the Root Chakra.
Black Zebra Jasper is a wonderful grounding stone and can help pull one's scattered energies in to work where they are most needed.