Polished Natural Cognac Baltic Amber Necklace - Screw Closure - 28 Inch Necklace is made of Baltic Sea Amber that is over 45 million years old. Baltic Amber has some of the highest concentrations of Succinic Acid found in nature and this is what makes it so special. Fossilized tree sap that has been preserved for millions of years under the sea. It is a true gift from Mother Nature. Please message me if you have any questions or need to see additional photos. Check out my store for more unique items. Top rated eBay seller since 2005.