"Drinks Named for Gemstones" for $200, Alex...

I picked up some fresh squeezed grapefruit juice today at the grocery store, and I was flicking through my drink guides to see what I could make with it that wasn't a Greyhound or a Salty Dog. I stumbled on this beauty by Dale DeGroff:

Garnet Cocktail

1 1/2 oz London dry gin (I used Boodles, Mr. DeGroff suggests Tanqueray No. 10)
3/4 oz Cointreau or other good triple-sec
1 oz pomegranate juice
1 oz fresh grapefruit juice
2 dashes Peychaud's bitters (my addition, to play with the fruit juices in the drink)

Shake all with ice and serve in a chilled cocktail glass. Garnish, if desired, with a flamed orange peel.

This may look like a Cosmopolitan, because it's pinkish, but it's definitely more interesting. The grapefruit juice gives it a gloriously tart character, but not overly so...there's still plenty of sweetness in it. It's really well balanced. Definitely worth adding to your repertoire.