Dreaming of ivory is a warning sign as per dream meaning and interpretation. The dream means trouble due to illegally accumulated wealth. It also means you coming into possession of something that might cause trouble in future. Dreams of ivory also means you will get something valuable but it will have to be given away soon.
Dream of ivory and you see other people means you will find something expensive and valuable but it will invite attention of thieves or authorities.
Dreams of ivory and you are not present in the dream means lucky escape from a problem. Something untoward will happen in a place you visit regularly but you will not be present during that particular time.
Dreaming of ivory and you see it breaking or floating in air means change of luck. It also means an incident in near future will shake up your beliefs.