For just $20.99 Picture Jasper gemstone necklace. Perfect gift for him or her or for you ! Adorned with Lava Stone for essential oil aromatherapy on the go ! Complete with black velvet style cord that is 18-20 inches with extender chain. Ready to ship ! Pendant measures roughly 1.5 inches in length and 1/2 inch in width. Genuine Picture Jasper Gemstone How to use lava rock for aromatherapy : Simply apply one to two drops of your favorite essential oil to the rock and the lava rock will naturally absorb the oils and omit scent. You can reapply as often as you would like. The scent will naturally extinguish itself, but you can speed up the process by adding a drop of white distilled vinegar to the rock and allowing it to dry and reapplying a new essential oil.