Yellow Jasper is used surprisingly often in many of our grids and layouts. It carries the yellow and gold Rays, and as such is an obvious (and inexpensive) choice for use at the Solar Plexus and Sacral chakras, and at the Seat of the Soul and Hara centres of the Unified Field.
It has a cheerful and sunny disposition that is both warming and cheering to the energy field and the physical, mental and emotional bodies. It also helps us connect with the Gold of our Christed (Buddhic) body and so ground more Joy and Divine Compassion and acceptance into our lives. Sometimes we just have to "let go" and BE our True (Divine) Self.