Rihanna, 'We Found Love'
Actual "yellow diamonds" do exist in gem form, and can be purchased at your local jeweler, but the kind Rihanna sings about are only available from less-reputable sources. Yes, what she found in a hopeless place was MDMA and the euphoric rush that drug provides, a high that's mimicked by Calvin Harris' highly pharmaceutical EDM break. In case the slang is too subtle for you, the pills and dilated pupils of the video imagery hammers that interpretation home. It's more than druggy enough to make you wonder what RiRi is singing about on "Diamonds."