I found a string with the Dalai Lama on one end and a glass vial with rock/sand inside the other. What is it?

Sorry it was limited in the question space above! I bought a used car and the charm type necklace was found in one of the storage spaces. On one end is a small tube that when you look into the hole it has a picture of the dalai lama inside (kind of like a kalaidescope). The other end has a glass container (about the size of tootsie roll) that has a sand colored chunk of rock or sand in it. I’m curious if this could be a piece of rock taken from a holy site or if it’s something as obvious as incense or something (it doesnt smell!) thanks for your help!