6 inch stretch bracelet. Green and Brown Cracket Agate, Stainless Steel Accent Beads, Lava Beads. Apply a drop of oil directly to the lava 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.