I found a very strange drug in my friends room please answer asap this is cery serious?

Im not sure what it is and having done drug before id imagine id recognize it, it like gray gravel but smaller like the size of pebbles, with smaller black things in it that look like timothy seeds (look like black tomato seed) and when i opened the container what looked like smoke came out which was obviously juat extremely fine powder of whatever this is. It also smells very fruity like skittles, please reply im worries about him