D.C. Taylor Jewellers

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(519) 376-3476

977 2nd Ave E
Owen Sound ON N4K 2H5 (Map)

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(519) 376-8062

1171 16th St E
Owen Sound ON N4K 1Z4 (Map)

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(705) 444-1171

120 Hurontario
Collingwood ON L9Y 2L8 (Map)

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Thu 9:00 AM - 5:30 PM
Fri 9:00 AM - 5:30 PM
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Sun Closed

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(705) 725-8062

411 Bayfield St
Barrie ON L4M 6E5 (Map)

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King Tut’s Breastplate Features a Scarab Carved From Rare Libyan Desert Glass

November 7, 2018

When British archaeologist and Egyptologist Howard Carter entered the intact tomb of King Tutankhamun in 1922, he encountered thousands of luxury objects intended to accompany the boy king into the afterworld.

Among the items decorated with gold, silver and precious gemstones was a breastplate depicting the god Ra as a winged scarab carrying the sun and moon into the sky. The scarab was carved from a pale greenish-yellow stone that Carter originally identified as chalcedony, a translucent variety of quartz.

A decade later, British geographer Patrick Clayton found samples of a similar glass-like material while exploring the Libyan Desert along the border of modern Egypt and Libya and classified it as Libyan Desert Glass (LDG).

In a recent article published at Forbes.com, geologist David Bressan explains that LDG forms when quartz-rich desert sand is exposed to a heat burst of 3,600°F and then rapidly cools. Modern researchers noted that LDG has a different crystal structure than common quartz and contains traces of rare minerals and unusual elements, suggesting they could have been part of a vaporized meteorite.

The LDG sample shown here weighs 22 grams (0.78 ounces) and measures 55 mm (2.17 inches) wide.

The lack of an impact crater near the areas where LDG has been found lends credence to the theory that a comet may have exploded before touching down in the desert — generating enough heat to melt the sands. Scientists have compared LDG to trinitite, which is created when sand is exposed to the thermal radiation of a nuclear explosion.

Because of the unusual factors needed to create Libyan Desert Glass, it is truly among the rarest minerals on Earth. LDG is found only in Libya’s desolate Great Sand Sea north of the Gilf Kebir Plateau. Whether King Tut’s handlers in 1323 BCE were aware of this rarity remains a mystery.

Credit: Tutankhamun breastplate by Jon Bodsworth [Copyrighted free use], via Wikimedia Commons. LDG image by H. Raab (User:Vesta) [GFDL, CC-BY-SA-3.0 or CC BY-SA 2.0 at], from Wikimedia Commons.