A penny is about 3 grams so that is a pretty good guess.
Average weight of a toy marble.
A marble is a small spherical toy often made from glass clay steel plastic or agate these balls vary in size.
Weight calculator marble granite stone miscellaneous.
The toy marble kind.
Ans 16 4 conversion factor from in3 to cm3 28 95 cm3.
Even if it is just a guess.
If you know the exact density of a specific material and wish to obtain the accurate instead of average weight.
According to the diameter you provided.
The three smallest sizes of marbles are 12 mm in diameter 9 16 of an inch diameter and 5 8 of an inch diameter.
0 75 3 4 3 pi volume in in3.
The 12 mm marbles are slightly smaller than a chinese checker marble.
Its about 75g per marble.
If you have a kitchen scale find the weight of the whole bag then divide by the number of marbles you have.
16mm is about the size of a dime the size of a player marble 25mm is about the size of a quarter the size of a shooter marble 35mm is about the size of a 50 cent piece 42mm is about the size of a silver dollar 50mm is about 2 inches across.
Average density of the material for weight calculation will be shown in the density box with g cc as default unit.