La Gloria – an extraordinary 887-carat rough emerald will headline Guernsey’s auction of the Marcial de Gomar Collection on April 12 in New York City. That golf ball–size stone, along with 17 emeralds discovered from the wreck of Spanish galleon Nuestra Señora de Atocha, all come from the collection of noted emerald authority Marcial de Gomar.
“It’s very rare for an auction to spotlight emeralds,” says Arlan Ettinger, founder and president of Guernsey’s. “We feel this will be an extraordinary event.”
La Gloria hails from the Muzo mine in Colombia, known for producing large emeralds. It’s sat in de Gomar’s collection for many years, and this is its first time on the market. And while the collector feels it could produce a 400 ct. polished stone, he has always believed it shouldn’t be cut.
This piece carries a preliminary estimate of $4 to $5 million and is part of a 2,000-carat collection that is expected to yield a total of $15 million to $20 million.
Included in the group are more than 20 loose emeralds – both faceted and rough – as well as 13 pieces of emerald jewelry.