For those wanting a smaller essential oil diffuser option, this is a great go-to! A stylish rose "Blossom" pendant is carried on a 316L Stainless Steel 18" chain. The chain is a delicate, ball station chain that is deceivingly strong! The chain secured close of the rose pendant ensures a secure closing. Length: 18" Diffuser pendant size: 0.75" round Pendant closure: Chain Secured Chain Material: 316L Surgical Grade Stainless Steel Pendant Material: Rhodium Included in package: Necklace and three 6mm diffuser lava stones (assorted colors) How to Use: Remove the chain from the pendant and open. Add 2 drops of your favorite essential oil (or 1 drop of a few different oils to make a custom blend) to the reusable lava stone. Let it absorb for at least 5 minutes (15 minutes would be ideal), wipe off any remaining oil with a tissue to protect inside of necklace, reassemble necklace and enjoy the aromatherapy benefits on the go! We offer a 90 day warranty on all Destination Oil's jewelry pieces. We stand behind our products and if you have any issues, please contact us to arrange for a replacement.