good cocaine is in rocky form(looks like crack) BE CAREFUL some scumbags will gather the powder around the chunks and spray water on it and form it into a chunk to make every1 think its the rocky powder..and when you sniff it, it wont burn AT ALL, will run in smoothly, might smell a kerosine scent, and ur nose will leak a lil and feel somewhat a drip and numbness...dont nsiff to hard where it all bypasses mucous membranes..if ur IVing cocaine, another way to tell if its good quality is by mixing the powder in water, if it dissolved completely and has no cut or nething left over in the water, its a sign of good quality,,,cocaine i shard to get in my area, its USUALLY SHIT, so i have to smoke crack, let the fuckers get there profit, but its good quality, but too expensive for 3.5 grams ($175) rock....