The Mani stone is also known as the prayer stone in Tibetan Buddhism. The Tibetan prayer stones are pebbles carved with Tibetan Buddhism mantras. You can find them in a lot of places such as monasteries, holy mountains, lakeside, often in piles. People put the mani stones on the pile to offer their prayer to the buddha.
This pendant is carved with the OM mantra. On the back of the pendant, carved the "all see eyes" of the Buddha. This is a very popular design from Nepal.
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