In a sign that Park Slope retail has moved beyond mere fancy-rag shops and trendy eateries, witness the pending arrival of Stoned, a store that will sell rocks, crystals, minerals and meteors, according to its awning. A neighborhood source tells us the Fifth Avenue shop, between Prospect and St. Marks, is slated to open next month. And apparently meteors don’t come cheap: Our pal told us not to bother checking the store out until we make more money. Gotta dig the name, though, no? GMAP