The first thing to say about Amber essential Oil, is that there is no such thing as Amber Essential Oil.
You can certainly buy products labeled as Amber essential oil but those are either blends of different essential oils, or they’re a synthetic fragrance oil, sometimes even a mix of both.
A true essential oil comes from a plant or a tree. You’ll spend a long time (forever) trying to find an Amber tree or an Amber plant.
Today the word amber is used to describe two distinct substances.