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.
USDA Grades for Meat and Poultry. Beef. Beef is graded as whole carcasses in two ways: 1  quality grades-for tenderness, juiciness, and flavor; and. 2  yield grades-for the amount of usable lean meat on the carcass. 3  There are eight quality grades for beef.4  Quality grades are based on the amount of marbling (flecks of fat within the lean), color, and maturity.eef is graded as whole carcasses in two ways: 1  quality grades-for tenderness, juiciness, and flavor; and. 2  yield grades-for the amount of usable lean meat on the carcass. 3  There are eight quality grades for beef.