Gems

Jeffrey Post, curator of the Smithsonian’s National Gem and Mineral Collection, says the size of the Dom Pedro Aquamarine is “unprecedented.”

Introducing the Dom Pedro Aquamarine

The one gem that can rival the Hope Diamond is finally on display at the Natural History Museum

Over the past three years, tourists have pulled more than 1,000 precious stones from the ground at Crater of Diamonds State Park in Arkansas.

The Curious Case of the Arkansas Diamonds

In a state park full of amateur diamond miners, one prospector dug up a valuable stone worth thousands of dollars—or did he?

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H. Tracy Hall, Diamond Pioneer

Crown Koh-i-noor Diamond

Gem Gawking

Where to See Famous Diamonds

Amber Room

A Brief History of the Amber Room

Dubbed the "Eighth Wonder of the World," the room that once symbolized peace was stolen by Nazis then disappeared for good

Jeweler Harry Winston donated the famous Hope Diamond—the largest-known deep blue diamond in the world—to the Smithsonian Institution in 1958. It arrived in a plain brown package by registered mail, insured for one million dollars. Surrounded by 16 white pear-shaped and cushion-cut diamonds and hanging from a chain with 45 diamonds, the rare gem attracts 6 million visitors a year to the Natural History Museum.

Diamonds Unearthed

In the final installment of this three-part series, diamond expert Jeffrey Post discusses the histories behind the Smithsonian collection

Jeweler Harry Winston donated the famous Hope Diamond—the largest-known deep blue diamond in the world—to the Smithsonian Institution in 1958. It arrived in a plain brown package by registered mail, insured for one million dollars. Surrounded by 16 white pear-shaped and cushion-cut diamonds and hanging from a chain with 45 diamonds, the rare gem attracts 6 million visitors a year to the Natural History Museum.

Diamonds Unearthed

Smithsonian diamond expert Jeffrey Post discusses conflict diamonds, colored diamonds and synthetic gems grown in the lab

At 23.1 carats, the gem is one of the largest Burmese rubies in the world.

Romance And The Stone

A rare Burmese ruby memorializes a philanthropic woman

Jeweler Harry Winston donated the famous Hope Diamond—the largest-known deep blue diamond in the world—to the Smithsonian Institution in 1958. It arrived in a plain brown package by registered mail, insured for one million dollars. Surrounded by 16 white pear-shaped and cushion-cut diamonds and hanging from a chain with 45 diamonds, the rare gem attracts 6 million visitors a year to the Natural History Museum.

The Hope Diamond

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Tantalizing Turquoise

The brilliant blue-green gemstone, prized by admirers from ancient times to our own, commands a booming, billion-dollar market

A Gem of an Exhibition

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Mysterious Pearls

Did they once belong to Vietnam's royal family? Perhaps. But for Ben Zucker, a "sleuth" of the gems trade, seeking the answer matters more than finding it

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