All that glitters may not be gold, but it is delicious and seasonally-appropriate AF. A UK-based store called Lakeland is selling rose gold glitter for prosecco, fittingly named "Raspberry Shimmer Popaball," which will upgrade your Prosecco game so fast it will make your head spin. Sorry, rosé, frosé, and every other rosé variation in between; in the summer of 2017, it is officially a glitter drink's time in the sun.
Granted, although this is marketed for prosecco, it can easily jazz up any clear liquid drink and take it from classy to ~classy~. According to Lakeland's website, it is "suitable for cocktails, mocktails and more." Just make sure that whatever you're pairing it with is well-suited to the extra kick of raspberry flavor that comes with the golden glitz. For what it's worth, though, it does seem that it would do best in drinks with a bit of fizz to them, since the movement in the glass makes that pink shimmer all the more apparent.
As of right now, the shimmer sells for £6.99 on Lakeland's website — the only snafu being that it's not yet available for international delivery. Your options here are either to make yourself some friends in the UK lickety split, or take advice from me, an unrepentant glitter monster who once worked in a cake-decorating bakery, on some ways to DIY this beautiful nonsense.
For lack of living in the UK, you can take your chances with ordinary, run-of-the-mill edible glitter, which retails for $7.99 on Amazon and comes in a whole host of different colors — including pink, which seems to be a trending color with some major staying power. Then supplement it with some edible gold flakes, which retail for about $5.99, to give it the same effect. They're both perfectly safe to consume (trust me, I've eaten enough of it by now that if it weren't, I would know), and should have the same effect on fizzy drinks that this ~shimmer~ would, even if it doesn't have the same color.
Et voilà! Now you're all set for the sparkliest summer of your life. I can think of no better way to deal with your post-Unicorn Frappuccino existential despair than this.