Six grains = about 0.388 grams.
If a grain is about 60 mg, then 10 grains of cocaine would be about 600 mg or .6 grams, quite a decent amount for sure...
2940 grains=60 grams
0.9 grams=39 grains more at freerice.com
22.679 grams = 350 grains
800 grains = about 51.839 grams.
30 grains = about 1.943 grams.
3.9 grams : 60.18 grains
3.5 grams = about 54.013 grains.
15 grains = about 0.971 grams.
185 grains = about 11.987 grams.
500 grams : 7716.18 grains
35.2 grains = about 2.280 grams.