How much is a 2.8 grams of 18k hge gold ring worth?

To determine the value of a 2.8-gram 18k HGE (Heavy Gold Electroplate) gold ring, you first need to establish the current market price of gold per gram. Since HGE gold is not solid gold but rather gold-plated, its intrinsic value is significantly lower. The value of the gold content in an 18k piece is about 75% pure gold, so you'd calculate the value based on that percentage, but it would still be considerably less than a solid gold ring. Generally, HGE items are worth much less than their gold content due to the plating.