How do I breed a Platinum Dragon in DragonVale?

Wondering how to hatch a Platinum Dragon in DragonVale? If you are like me, you want the fastest breeding pair possible. Seems like it has been a while since a new Treasure dragon was introduced, but luckly we need wait no longer. The Platinum Dragon is now available, but be warned - it is very rare!

Platinum Dragon

Breeding Pair: Metal + Rust or Water + Rust

Breeding Time: 49 hours or 39 hours 12 minutes (with upgrade)

Availability: Unlimited

Type: Treasure, Epic

Price: 2400 Gems (Good heavens!)

I like the design of this one a lot. I'm glad to see a more conventional "dragon" after some of the more wild designs recently. Happy breeding!