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.
The beef grading system developed by the United States Department of Agriculture is a voluntary grading system based on the meat's maturity and level of fat marbling.These two factors are indicators of the beefâs tenderness.eef Grades. U.S. Prime â This is the highest grade of beef with the most fat marbling. This meat is very tender and only accounts for about 2.9% of all graded beef. U.S. Prime is usually reserved for high end dining establishments.