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.
Quality Grades - Beef. Quality grades are reflective of the eating quality of beef. Beef carcasses are cut between the 12 th and 13 th rib, making the ribeye easy to view. United States Department of Agriculture (USDA) Graders evaluate the distribution on marbling in the ribeye. The age or maturity of the animal is also factored into the quality grade.