Introducing the ‘Heaven Scent’ Essential Oil Diffusing Necklace. This beautifully simple oval locket is centered with a clear quartz like rhinestone and accented with a small black cross charm. The length of the chain is 21″. The locket opens up and holds a small felt pad. Simply add 1-3 drops on the pad, place inside, clip the locket closed and enjoy the subtle scent for days. Each necklace comes with 2 reusable felt pads.