If you have much money sitting around, why not buy another supercar with it?

Awain specializes in creating jewel-encrusted keys for the world's most expensive vehicles, and the Phantom is its ultimate creation at a price of 500,000 euros ($563,361 at current exchange rates) That figure is not a typo, either. This is a key that costs more than a Lamborghini Aventador SVJ with a base price of $517,770.

Gallery: Awain Custom Key

Over half a million dollars buys you a key with a total weight of 34.5 carats of tiny diamonds around the outside. Precious stones also line the face. The rest of the fob contains 175 grams of solid 18-carat gold. Buyers can customize the look by choosing the materials for the center section, including multiple colors of leather or wood. The company is making just a single Phantom to ensure that that creation remains unique.

If you'd prefer something a little more modest, Awain makes some less expensive keys, although they still aren't really affordable. The Serenity is 80,000 euros ($100,272), and it features a mix of 20 carats of diamonds and 175 grams of gold. The Quantum costs 49,000 euros ($55,206) for a combination of 3.6 carats of diamonds and 175 grams of gold. These offerings are limited to 20 examples each.

Would you pay $500,000 for a car key? Let us know in the comments.

Awain makes custom keys for models from Bugatti, Bentley, Aston Martin, Maserati, Lamborghini, McLaren, Maybach, Rolls-Royce, Porsche, and Mercedes-Benz, which makes its product even weird. Most of these model have key-less access, meaning that owners never need to take the key out of their pocket. So no one would ever see this 500,000-euro piece of jewelry.

Source: Awain, Visual Works via Vimeo