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Birthstone of August--Peridot

BIRTHSTONES & ANNIVERSARIES

Peridot is the birthstone for August and the 15th anniversary gemstone.

ABOUT PERIDOT

The ancient Egyptians mined peridot on the Red Sea island of Zabargad, the source for many large fine peridots in the world’s museums. The Egyptians called it the “gem of the sun.” Today this gem is still prized for its restful yellowish green hues and long history. Large strongly-colored, examples can be spectacular, and attractive smaller gems are available for jewelry at all price points.

 

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While the 64.57-carat cut peridot is magnificent, it is overshadowed by the amazing 
7.9-cm tall crystal. Both are from Sappat, Kohistan, Pakistan. - Jeffrey Scovil
Gem miners find peridot as irregular nodules (rounded rocks with peridot crystals inside) in some lava flows in the United States, China, and Vietnam and, very rarely, as large crystals lining veins or pockets in certain types of solidified molten rock. Sources for the latter include Finland, Pakistan, Myanmar, and the island of Zabargad.

Suite of Peridot Jewelry
This incredible suite of peridot jewelry has a total weight of 350.40 carats. All are top-quality peridots from Pakistan. - © GIA & Harold & Erica Van Pelt
Geologists believe both types of deposits relate to the spreading of the sea floor that occurs when the earth’s crust splits, and rocks from its mantle are pushed up to the surface. Sometimes—as in Myanmar— these rocks can be altered, deformed, and incorporated into mountain ranges by later earth movements.

Rarely, peridot can have an extraterrestrial source, being contained in meteorites that have fallen to earth.

The color range for peridot is narrow, from a brown-green color to yellowish green to pure green. Yellowish green is the most common peridot color seen in jewelry.

Princess Cut Peridot
Peridot is best known for its yellowish green color.
Peridot is the gem variety of the mineral olivine. Its chemical composition includes iron and magnesium, and iron is the cause of its attractive yellowish green colors. The gem often occurs in volcanic rocks called basalts, which are rich in these two elements.

Healing Sisters
These peridots from Peridot Mesa in the San Carlos Apache Nation, Arizona, are set in a jewelry style called "Healing Sisters.” - Courtesy Apache Gems