The Mouawad Blue Diamond: The Enigmatic Legacy of the Tereshchenko Diamond Of India Origin

Tereschenko diamond,
en.wikipedia.org

“It's hard to be a diamond in a rhinestone world

― Dolly Parton, famous US Country Music Singer in the 1970s to 1990s

From Hollywood actress Marilyn Monroe to Bollywood actress Katrina Kaif, women's love affair with dazzling diamonds has never lost its sheen. It is primarily due to the fact that it is a symbol of eternal love between the man and woman, apart its possession, be it small, gives the owners a sense of security and confidence.

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The Tereshchenko Diamond, now known globally as the Mouawad Blue, stands as one of the most significant gemstones in mineralogical history. Ranking as the world’s second-largest fancy blue diamond—surpassed only by the legendary Hope Diamond—this 42.92-carat, pear-shaped marvel is a masterclass in rarity, lustre, geological wonder, and historical intrigue. From its shadowy origins in the South Indian diamond mines to its dramatic escape from the Russian Revolution, the diamond’s journey is as vivid as its deep azure hue.

Geological Origins: The Golconda Connection

While the earliest written records of the diamond appear in the early 20th century, gemologists and historians largely agree on its Indian provenance. Specifically, it is believed to have originated in the Kollur Mines of the Golconda region, with capital in Hyderabad (in present dat Telangana).

Blue diamond sofiatereshchenko.com

second largest blue diamond indianexpress.com

Above image: As for the origin of this interesting diamond, it is a matter of debate. However, judging from some facts, a clear picture emerges as to its origin. In the past only two well-known diamond mines Kollur mines of India and Premier mines in Transvaal S. Africa yielded over a period of time high quality diamonds, including rare blue diamonds in the world, The Premier mines was started in 1902 and there is no record of production of blue diamonds in the 20th century, so, the possibility is this rare blue diamond must have come from the Kollur diamond mines (in present day Guntur district of Andhra) of Golconda Kingdom ........

The confirmation of its Indian origin stems from a process of elimination and geological "fingerprinting." Until the discovery of the Premier Mine in South Africa in 1902, India was the world’s only source of Type IIb blue diamonds. Furthermore, the Premier Mine had no recorded production of a blue stone of this magnitude during the period the Tereshchenko surfaced in Europe. The stone’s characteristics align perfectly with other "Golconda Diamonds" like the Hope and the Wittelsbach-Graff, which are renowned for their exceptional transparency and lack of nitrogen.

The Science of the Blue

The captivating color of the Mouawad Blue is a result of a rare chemical "impurity." Most diamonds are composed entirely of carbon, but Type IIb diamonds contain trace amounts of boron atoms trapped within the crystal lattice.

Boron atoms have one fewer electron than the carbon atoms they replace. This creates "holes" in the structure that absorb light in the red, orange, and yellow parts of the spectrum. The light that is reflected back to the human eye is consequently shifted to the blue end of the spectrum. Because blue diamonds represent less than 0.1% of all diamonds mined, a stone of nearly 43 carats is a geological anomaly of the highest order.

A History of Revolution and Resilience

The diamond takes its name from the Tereshchenko family, incredibly wealthy Russian sugar magnates. In 1913, Mikhail Tereshchenko, a man of immense political influence who would later serve as a minister in the Russian Provisional Government, commissioned the House of Cartier to mount the stone. It became the centerpiece of a breathtaking "rainbow" necklace featuring 46 multi-colored diamonds.

Mikhail Tereschenko.en.wikipedia.org

The 1917 October Revolution upended this luxury. Following the Bolshevik rise to power, Mikhail was imprisoned. In a plot fit for a thriller, he managed to escape in 1918, purportedly smuggling or having previously deposited his treasures in Paris. To rebuild his life in exile, Mikhail eventually sold the diamond to an anonymous buyer, after which it disappeared from public view for decades.

Modern Ownership

The diamond re-emerged in 1984 at a Christie’s auction in Geneva. It was purchased for 10 million Swiss francs—a record price at the time—by the renowned jeweler and collector Robert Mouawad. He subsequently renamed the gem the Mouawad Blue, adding it to his prestigious collection of world-class diamonds. Today, its value is estimated to exceed $20 million, serving as a glittering reminder of India’s lost mineral wealth and the enduring allure of the deep blue.

https://navrangindia.blogspot.com/2015/08/tereschenko-diamond-second-largest-blue.html

https://indianexpress.com/article/lifestyle/life-style/largest-and-most-valuable-blue-diamond-to-come-to-auction-at-sothebys-hong-kong-7779602

https://sofiatereshchenko.com/tereshchenko-diamond

https://en.wikipedia.org/wiki/Tereshchenko_Diamond

https://www.naturaldiamonds.com/historic-diamonds/tereshchenko-diamond

https://gem-a.com/gem-hub/mouawad-tereschenko-diamond-second-largest-blue-diamond

https://indianexpress.com/article/explained/explained-history/the-story-of-golconda-blue-and-of-indias-once-legendary-diamonds-in-gol

K.N. Jayaraman (Author: navrangindia.blogspot.com)