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.
Rating Newest Oldest. Best Answer: 1 troy ounce = 31.1 grams. Precious metals such as gold and silver are often sold by the troy ounce. Many people donât realize that an ounce of gold (and other precious metals) is weighed in a different weighing system called troy weights. A troy ounce is more than the typical ounce found at the grocery store.