Archaeologists <a href="http://edition.cnn.com/2016/09/20/middleeast/jerusalem-nero-coin/index.html">unearthed</a> a rare 2,000 year old Roman coin during a <a href="http://edition.cnn.com/2016/09/20/middleeast/jerusalem-nero-coin/index.html">scientific dig</a> in Jerusalem. The gold coin features the face of Emperor Nero and was likely struck in 56-57 AD. Scroll through the gallery for more unexpected treasures.
Archaeologists unearthed a rare 2,000 year old Roman coin during a scientific dig in Jerusalem. The gold coin features the face of Emperor Nero and was likely struck in 56-57 AD. Scroll through the gallery for more unexpected treasures.
UNC Charlotte
Parts of the silver treasure unearthed in Schaprode, northern Germany. Some of the rings, coins and brooches belonged to the Danish King Harald Bluetooth.
Parts of the silver treasure unearthed in Schaprode, northern Germany. Some of the rings, coins and brooches belonged to the Danish King Harald Bluetooth.
STEFAN SAUER/DPA/AFP/Getty Images
Thanks to a 13-year-old boy's discovery of a small piece of silver in a field in Germany, preservationists have now salvaged more than 600 coins and pieces of silver jewelry dating back to the 10th century.
Thanks to a 13-year-old boy's discovery of a small piece of silver in a field in Germany, preservationists have now salvaged more than 600 coins and pieces of silver jewelry dating back to the 10th century.
STEFAN SAUER/DPA/AFP/Getty Images
<a href="https://edition.cnn.com/style/article/ancient-roman-coins-japan/index.html" target="_blank">Ancient Roman coins </a>were recently discovered in Okinawa, Japan. This image shows the front of a Roman coin. The front of an Ottoman coin. One of the ten ancient coins that were discovered in <a href="https://edition.cnn.com/style/article/ancient-roman-coins-japan/index.html" target="_blank">Katsuren castle</a>.
Ancient Roman coins were recently discovered in Okinawa, Japan. This image shows the front of a Roman coin. The front of an Ottoman coin. One of the ten ancient coins that were discovered in Katsuren castle.
Uruma City Educational Board
In August 2016, <a href="https://edition.cnn.com/style/article/largest-pearl-philippines-amurao/index.html" target="_blank">the world's largest pearl </a>was discovered under a bed in the Philippines, where it had lain forgotten for over ten years.
In August 2016, the world's largest pearl was discovered under a bed in the Philippines, where it had lain forgotten for over ten years.
Aileen Cynthia Amurao
The bead on this bracelet, from Portland-based design company William Henry, is actually <a href="http://edition.cnn.com/2016/03/29/luxury/dinosaur-bone-accessories/">made</a> using fossilized mammoth tooth and dinosaur bones.
The bead on this bracelet, from Portland-based design company William Henry, is actually made using fossilized mammoth tooth and dinosaur bones.
courtesy william henry
This 1,109 carat, tennis ball-sized diamond made headlines in November 2015 when it was <a href="http://edition.cnn.com/2016/09/09/luxury/most-expensive-rough-diamond/">pulled</a> out of the Karowe Mine, in Botswana, by Canadian company Lucara Diamond Corp.
This 1,109 carat, tennis ball-sized diamond made headlines in November 2015 when it was pulled out of the Karowe Mine, in Botswana, by Canadian company Lucara Diamond Corp.
Courtesy de Grisogono
In May 2016, divers <a href="http://edition.cnn.com/2016/05/16/middleeast/roman-coins-treasure-shipwreck-israel/">discovered</a> a 1,600-year-old shipwreck while swimming the ancient Roman port of Caesarea. These rare bronze artifacts were recovered from the ship.
In May 2016, divers discovered a 1,600-year-old shipwreck while swimming the ancient Roman port of Caesarea. These rare bronze artifacts were recovered from the ship.
Clara Amit, Courtesy of the Israel Antiquities Authority
Over 1,300 pounds (590 kg) of bronze Roman coins dating to the 3rd century A.D. were <a href="http://edition.cnn.com/2016/04/29/europe/spain-roman-coins-found/">unearthed</a> in April 2016 by construction workers digging a trench in Spain.
Over 1,300 pounds (590 kg) of bronze Roman coins dating to the 3rd century A.D. were unearthed in April 2016 by construction workers digging a trench in Spain.
ATLAS
In January 2016, over 4,000 Roman coins were <a href="http://edition.cnn.com/2015/11/20/luxury/roman-coins-switzerland-farmer/">discovered</a> by a fruit and vegetable farmer on a molehill in his cherry orchard in Switzerland.
In January 2016, over 4,000 Roman coins were discovered by a fruit and vegetable farmer on a molehill in his cherry orchard in Switzerland.
Béla Polyvàs, Canton of Aargau