Antique Elks Tooth i would guess mounted in gold making it a stunning pendant 

no reserve 

The Antique Elks Tooth is a rare and unique piece of memorabilia held by collectors and enthusiasts. These teeth are typically shed by elks and are highly sought after for their historical and decorative value. Each tooth tells a story of the animal's life and captures a piece of wildlife history, making it a valuable collector's item for those with a passion for nature and antiquities.