LAVA STONE - The lave stone is a precious stone formed after the volcanic eruption, each bead is completely different. And it is rich in minerals and trace elements. The more oil you use, the stronger the aroma. We advise you to add drop by drop until you get the desired strength. Then wait a few minutes for the oil to be absorbednKEEP SCENT ALL DAY - The diffuser necklace has a neat antique look, which is a round floral filigree designed locket style pendant. And come with a beautiful butterfly glass bottle, allow you to carry essential oils wherever you gonWAX ROPE - Unlike other chains easily broken, the 24u0026#34; adjustable chain are very smooth and soft, with a stainless steel square buckle, anti-allergy, hand-made and environmental protectionnA PERFECT GIFT SET - We specially designed a exquisite gift packing box. Would be a great gift for who need it. The diffuser necklace is easy to use, drop the essential oil you need, then enjoy the benefits of the aromatherapy necklacen100% GUARANTEED SATISFACTION- If you have any question, please feel free to contact us, we will try our best to help you solve your problem until you are satisfiedn