Occamy egg

The egg of the Occamy is made of pure silver, which understandably accounts for why it is so much sought after. It also has lustre-giving properties and are rather nutritious to the hair — Gilderoy Lockhart developed a shampoo made from Occamy egg yolks that guaranteed "locks of lustrous luminosity", even though the expense and danger of producing it ensured it never was produced for a mass market.

Occamy egg shells were an essential ingredient for Felix Felicis.

Appearances

 * Fantastic Beasts and Where to Find Them
 * Pottermore
 * Wonderbook: Book of Potions