amnhnyc: Well-formed emeralds preserved in their natural, crystalline state are tremendously rare. This 632-carat specimen, measuring 2 ½ inches by 1 inch (6.3 x 2.5 cm) is one of the largest gem-quality emeralds in the world. Known as the Patricia

amnhnyc: Well-formed emeralds preserved in their natural, crystalline state are tremendously rare. This 632-carat specimen, measuring 2 ½ inches by 1 inch (6.3 x 2.5 cm) is one of the largest gem-quality emeralds in the world. Known as the Patricia

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