Sweet Oasis Necklace Set is beautiful & simple just add a drop or two of essential oils to your lava stone necklace * Both the gold and silver necklaces are made of brass, and they are hypoallergenic and lead free. * features a refreshing mix of Copaiba, Cedarwood, Lime, Lavender, and Balsam of Peru. * With this unique blend of oils, Sweet Oasis provides a trusting and uplifting atmosphere to calm the heart. Great Gift essential oils & Necklace 18" chain gold or silver