For any tech/camera people I shot it entirely on my iPhone 5s, even the underwater stuff (with my phone inside a sandwich bag). I've been a proponent of phones as filmmaking tools for years and have filmed numerous videos with my 5s, including holidays in Nerja and Venice. Like most people I use my phone for everything other than phone calls, these days mainly filming and catching Pokémon.
Check out the Sugar & Vice website for the rest of the SS16 collection and all the other fantastic jewellery.