An improved atomization jet assembly for aromatherapy essential oil diffuser wells. It does not loose the cap during handling. It uses the capillary of liquids principal to draw essential oils between the exterior of the jet FIG. 12 and the inner cap profile FIG. 7. The flow of liquid is stopped by a capillary break 40. The Ventura principal is then used to create a low pressure area between the top of the jet ball 44 and the inside radius of the cap 65. An air/oil mixture blows out of the cap orifice 66 with the aid of an air pump. The net result is increased availability of air molecules attaching to oil molecules and making them airborne and breathable.