Turtle Boys Essential Oil Diffuser Necklace- Leather with Lava Stone. This is a Destination Oils custom diffuser necklace made with boys in mind. It is hard to find a diffuser necklace that boys will wear- this item solves that problem. Lava stone is nestled between 2 wooden beads on this soft brown leather cord. Everyone can wear this necklace: men, women, boys, and girls! Length: 18" with 2" extender. Turtle pendant size: 1.5" x 1". Chain Material: Leather. Pendant Material: Rhodium. Included in package: Necklace.