I don't know what this style is called, but its definitely new to me.
It comes in two parts. This is the outside. I've used some Crafter's Companion dies here to make the triangular panels. They don't cut on the third (hidden) side, so I left a border there for attaching to the backing sheet. The flower is also Crafter's Companion. I started with a gold-coloured card and brushed on some Ripe Persimmon Distress Ink, and finished with some Liquid Pearl.
And that's it. I'm looking forward to being inspired by lots of lovely new ideas!