This is a medium Abalone Shell which is great for using to extinguish your sage smudge sticks in your smudging rituals. Abalone are a type of mollusc similar to clams and oysters and the mother-of-pearl bearing shells are traditionally used in native American rituals, as it is believed that the combination of sage and shell would carry their messages up to heaven Abalone shells carry protectional energies and bring with them emotional balance, generating a natural shielding to the user These shells are approx 4 inches in size (9cm - 10cm). Size and shape may vary slightly from the image shown.