Though diamonds enjoy the reputation of （1）a girl's best friend, emeralds in fact are more （2）-and more valuable.
"Sought（3）for their rich color, regal history and identifiable look, emeralds are one of the most iconic gemstones in the jewelry industry, Amanda Gizzi, a spokesperson（4）Jewelers of America, a New York-based trade association, said in an email.
On April 25, the public will have the opportunity to own some of the most magnificent and valuable emeralds in the world, when they （5）for sale at Guernsey's auction house in New York.
With more than 20 cut and raw stones and 13 spectacular pieces of jewelry, the rare emeralds （6）all come from a single collection that was compiled by emerald specialist Manuel Marcial de Gomar （7）his long career in the emerald industry.
One of the highlights of the sale is a collection of cut emeralds from the great Spanish shipwreck Nuestra Senora de Atocha, a galleon that（8）the Florida coast in 1622.
The wreck is considered "the most valuable（9）shipwreck in history, according to the catalog（10）the sale, largely（11）its numerous Muzo emeralds, which are prized for their deep, clear green.
When treasure hunter Mel Fisher（12）retrieve the galleon's lost bounty in the 1980s, he hired Marcial to help him appraise the stones and jewels （13） the ship's wreckage.
Several of these stones, （13）Marcial as payment for his work, are on offer in the Guernsey’s sale, and include the Nine Pillars of Andes, a group of nine rough stones totaling over 91 carats and carrying an estimated price of $2.5 million to $3.5 million; and the 4.39 carat Queen of the Sea, estimated to sell for $250,000 to $350,000.
Also included in the sale is the 887-carat La Gloria, which Guernsey's bills as " one of the largest museum-quality emeralds in the world, "(estimate $4-5 million); and the Marcial de Gomar Star Emerald, the（15） star emerald ever found (estimate $2-3 million), notable for its double-sided cabochon, and one of only 11 star emeralds known to exist.
