It was gold dust that weighed 4.6 grams equivalent to 500 or 3,000 cowries.

Equivalent weight (also known as gram equivalent) is a term which has been used in several contexts in chemistry.

If the percentage is mass/mass, then 100g of the solution contains a mass in grams equivalent to the percentage.

The normality of a solution is the number of gram equivalent weight of a solute per litre of its solution.

To determine Avogadro's number (the number of items in a mole), we need to (agree) define the atomic mass as the gram equivalent of the formula mass.