It's from MAC's new Colour Craft Collection, the Daft Pink Mineralize Blush. You can see it in the picture here, though I think in actuality it is a bit lighter of a pink then the picture shows. It's a medium blue based pink with light yellow/gold and white veining throughout. It is fairly translucent though buildable, and it blends beautifully. With a big brush it gives my pale skin a radiant glow, and is a pretty pink blush if I use a smaller blush. The gold makes it glow on my skin without being shimmery or gaudy. It's just pretty.
MAC Mineralize Blush in Daft Pink