Also called foil embossing or hot foil stamping, this method uses a custom created metal die and heat to press or stamp foil into the substrate or paper. The use of a die makes it similar to letterpress, but the cost of the die and the foil typically make this option slightly more expensive than letterpress, but not always.
There are many varieties of foil, and not all of them are metallic. In fact, some of my favorite creations utilize matte foils. I created the incredibly chic and unique foil stamped wedding invitation at the top left with a soft matte black foil stamped onto black paper to create a tone-on-tone effect. You can see a version in tone-on-tone white foil stamping that I created for my W*ink business cards in the second picture down on the right (second card). There's even a clear foil option which will render something like the second picture down on the left. Gold foil, as shown on the bottom four photos and on the top right photo of a foil stamped invitation suite we created for a Marie Antoinette-inspired wedding, instantly lends an air of luxury to any design.
Images, from top left: Capriotti black tone-on-tone wedding invitation, Rachel Wiles for Benign Objects/W*ink; Marie Antoinette-inspired wedding suite, Rachel Wiles for Benign Objects/W*ink; W*Ink business cards, Rachel Wiles for Benign Objects/W*ink; "Un.titled" stationery system designed by Andrew Townsend ; "Shine" by Dauphine Press (carried in-store at W*ink); ikat gold-lined envelope and gold and blue invite by the Lettered Olive ; Fox & Flyte, via BCE-online.com.