5 grams weighed it myself
5lbs
2 pounds
4
2 pounds
NBA player Roy Devyn Marble weighs 200 pounds.
5 tons
4
100%...
about 30grams
Marble is a type of rock and it exist in nature as a mountain or hill. There is no size limit for this answer. It can weight a few kg for construction marble cut to a few Gigaton of mountain rock.
Need to know how much one marble weighs, and how many are in a cubic yard
A typical marble is around 4 or 5 grams so 90-100 of them will be about 1 pound. The average glass marble for playing with are about 14-16mm in width.