However, in 2005, it was reported that miners in Madagascar dug up a gem weighing 1,182 pounds which has also been feted as the world's largest emerald. Of less contention is the largest known pearl which was found by a Filipino diver off the island of Palawan in 1934.
USDA Beef Grades. Beef is graded for quality by U.S. Department of Agriculture (USDA) graders according to standards established by the USDA. Grades are based on the amount of marbling (flecks in fat within the lean) and the age of the animal.
Beef grading in the United States is performed by the United States Department of Agriculture 's (USDA) Agricultural and Marketing Service. There are eight beef quality grades, with U.S. Prime being the highest grade and U.S. Canner being the lowest grade.