New York: An 887-carat rough emerald will come under the hammer in New York in April. Named “La Gloria,” the gem is one of the largest museum-quality emeralds in the world, according to Guernsey’s, which will auction the piece.

The stone originated in the Muzo mines of Colombia and was collected by Manuel Marcial de Gomar, a veteran of the gemstone business and founder of Emeralds International.

Several rough and cut emeralds that De Gomar has gathered will also be up for bids, including the Marcial de Gomar Star, which Guernsey’s has described as the largest recorded star emerald and one of only 11 in the world.

The auction will take place on April 25 at the Americas Society, 680 Park Avenue, as well as online.