Record: The Only Diamond To Receive A Perfect AGS Grade Of 0/0/0
Crater of Diamonds is a US State Park located in Pike County, Arkansas. In 1990, the most marvelous discovery ever made there, was made when Shirley Strawn found the Strawn-Wagner Diamond. Originally, the diamond weighed 3.09 carats (620 mg) but, after it was cut to a size of 1.09 carats (220 mg), it was given a perfect AGS grade of 0/0/0 by the Gemological Institute of America, indicating no flaws in cut, color, and clarity. It was the first time in history that a diamond had received a perfect AGS grade. According to AGS Laboratory Director Peter Yantzer, the diamond is one of the rarest in the world and a one-in-a-billion discovery. It is currently on display at the Crater of Diamonds State Park.