6 1/2 inches. Brown and Pink Crazy Lace Agate Gemstones, Brown Lava/Diffuser Beads, Silver spacers. Apply a drop of oil directly to the lava/diffuser bead or use your finger to rub the oil on the bead. The scent will diffuse for 1-2 days depending on your oils. Some oils are stronger than others and can last longer. See HOME tab for sizing and care of stretch bracelets.