Thank you for submitting your item for appraisal. This appears to be a piece of cast resin in the shape of a carved ivory tusk. The chinese or italian forgers usually added some marble powder to the resin to add some weight. There are several open air bubbles from the cast, this is a clear indication. Ivory is a very hard and dense material and would show so called Schreger lines. Unfortunately this cast tusk has a decorative value only.