Ring- Om mani padme hum; silver coated  

Meanings: The two syllables, "padme", meaning lotus, symbolize wisdom. ... Thus the six syllables, "om mani padme hum", mean that in dependence on the practice of a path which is an indivisible union of method and wisdom, you can transform your impure body, speech, and mind into the pure exalted body, speech, and mind of a Buddha"

Ring- Om

Meaning: A mystic syllable, considered the most sacred mantra in Hinduism and Tibetan Buddhism. It appears at the beginning and end of most Sanskrit recitations, prayers, and texts.