If so, where?
Proffesor Juniper will give you one when you enter chargestone cave.
Professor Juniper will give it to you after you beat Clay in Chargestone Cave. Also, on Route 13, there is a man in sunglasses that will give you various treasure items. One of these items is the Lucky Egg.
You get it from professor juniper upon entering the chargestone cave.
Source: personal experience