Om is a mystic syllable, considered the most sacred mantra. It appears at the beginning and end of most Sanskrit recitations, prayers, and texts.
 
Hand carved solid yello bronze charm.
The charm is about 12mm wide.
Blackened solid sterling silver chain.
The chain is antiqued (oxidized). 
The chain is not painted on.
Over time the oxidation might fade or darken in color depending on your body's chemistry.