The Erie Canal is famous in song and story. Proposed in 1808 and completed in 1825, the canal links the waters of Lake Erie in the west to the Hudson River in the east. An engineering marvel when it was built, some called it the Eighth Wonder of the World.
Quick Answer. There are 7.09 grams in one-quarter of an international avoirdupois ounce, which is the most commonly used measure of ounces, as of 2014. There are 7.78 grams in one-quarter of a troy ounce, which is commonly used for measuring the mass of precious metals.
Grams Per Troy Ounce. An ancient system of weights. The troy ounce belongs to the Troy weight system, which contains troy ounce, troy pound, drams and scruples. The troy pound is not often used, but the troy ounce is the common way of reporting the prices of precious metals.