Abalone shells are excellent for enhancing your spiritual practice. They share a connection with the water element, which governs the feminine, or yin, energy and emotional world. As such, abalone shells are a fantastic choice when you're looking to soothe your emotions or summon a more peaceful atmosphere into your personal space.
Consider using an abalone shell to catch the ashes or hold your bundle of herbs while smudging. If you're moving into a new house or apartment, you may want to use the smoke to clear the space of any past energy. Alternatively, you may find it helpful to burn a bit of sage or palo santo before you settle into a meditation practice or other spiritual work.
A note on using abalone shells for smudging rituals: Before burning palo santo or sage, sprinkle a bit of sand in the bottom of your shell to protect the mother of pearl inside. With proper care, you can expect a lifetime of enjoyment out of your abalone shell.