The name for a yellow or orange substance made of the resin of ancient trees is Amber. Amber is a fossilized tree resin that has been used for thousands of years to make jewelry, decorative objects, and other items. It ranges in color from yellow to orange to brown and can sometimes contain insects or other small organisms that were trapped in the resin as it hardened over time. Amber is found in many parts of the world, including the Baltic region of Europe, the Dominican Republic, and Mexico. It is prized for its beauty and rarity and is often quite valuable.