Stone with silver butterflies in a circle pendant, maybe asian christian relgeous relics.

I'm not sure what they are called but the people I got them from told me they are used for prayer worship, or religeous ceremonies. They said the yellow one with the red is a spinner, for what purpose I don't know. They both have a butterfly circle, and they are made of some types of stones. The metal is silver. The red has a crusifix. The front and back are the same, but I think the pictures may be the same side. Any info on them would be great.