From the cake(of crushed kernals) is distilled, by digestion with alcohol, an essential oil (0l. Amygdae Essent. Pers.) which contains a colourless, crystalline glucoside, Amygdalin, and is chemically identical with that of the bitter almond.
--taken from a seller's site
Most commonly apricot oil is the pressed garbage, as mentioned. Essential Oil of Apricot Kernals is very expensive.