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The Tereschenko Diamond

Updated on April 17, 2012
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Rebecca Graf is a seasoned writer with nearly a decade of experience and degrees in accounting, history, and creative writing.

The Tereschenko Diamond
The Tereschenko Diamond

So many gems have had the necessity to go into hiding during wars and revolutions. Some have never resurfaced while others have miraculously reappeared. Once such gem was the Tereschenko Diamond of Russia.


The Tereschenko Diamond is an unusual blue color. When one thinks of diamonds, they think of crystal clear ones that shimmer and shine. Well, diamonds come in several colors including blue. At first, you would think they were sapphires, but the trained eye sees them for they really are: Diamonds.

Diamonds are the hardest natural substance on earth. They are formed in the heat of volcanoes. The Tereschenko Diamond currently weighs 42.92 carats and is cut in a pear shape which is rounded on the bottomed and tapers up into a point. It resembles a tear-drop.

It is labeled a fancy blue diamond based on its brilliance. There is only one other fancy blue diamond that is larger than the Tereschenko Diamond. That is the famous Hope Diamond.

Ivan Nickolaevitch Tereschenko
Ivan Nickolaevitch Tereschenko


Mystery makes a diamond even more attractive and alluring. Where did the Tereschenko Diamond come from? When was it mined? Who found it? Who was the first to own it? We know none of these answers. All we know is that it once belonged to the prominent Tereschenko family of Russia.

The Tereschenko family was wealthy Russians who found their fortune through industry including the sugar industry. They owned land and held a high position in Russian society until the revolution sent the family into exile.

The Russian family hired Cartier to put the diamond in a necklace setting surrounded by clear diamonds. This occurred in 1915 just in time for it to be smuggled out of the country and into France as the Russian Revolution descended upon the nation. It ended up in the hands of a private gem collector who kept it hidden away until 1984.

In 1984, the diamond was sold by Christie’s for $4.5 million to a man from Lebanon named Robert Mouawad. Though the traditional name for the gem is the Tereschenko Diamond, the new owner renamed it the Mouawad Blue Diamond. Bought for just over $4 million, it is now estimated to be worth $20 million dollars.

Blue Diamonds

What causes the blue in the Tereschenko Diamond? It’s not nitrogen. That produces a yellow diamond. To have a blue diamond, there has to be boron present during the creation of the diamond. Boron is a semi-metal that is used in various areas such as space technology and nuclear reactors.

The need to have a certain chemical present to create a specifically colored diamond means that blue diamonds are usually found in large groups. These diamonds used to be much rarer but more are being discovered as new acreage is being turned over in the search for these hard stones.

The blue color of the Tereschenko Diamond is not the only blue that can be found in natural diamonds. It can range from a pale blue to the deep fancy blue of the Hope and Tereschenko Diamonds. Most are of the paler colors. In fact, some appear to be clear diamonds with a hint of blue within them under certain lights.

Blue diamonds can be made in the lab with nitrogen and other chemicals mixed together. Even the fancy deep blue has been achieved by man. These stones do not cost as much as naturally made ones but are still real diamonds.

What Makes Diamonds so Appealing?

Diamonds have been sought after for hundreds of years by royalty and peasant alike. They have graced the neck of kings and queens. They have nestled in the crowns of rulers and on the hands of new brides. Diamonds. What is it about them?

Diamonds, for one thing, are beautiful. They shine and reflect the light like the stars in the sky. That alone could be reason enough for the desire to own them. Another is the unique chemical makeup of the stone. It is the hardest natural substance in the world. It can cut through glass and metal. This gem is beauty and strength all in one.

Today, man can recreate the process of making diamonds in the lab and produce real diamonds. Diamonds can be found on almost any person from small diamond flakes to huge stones in engagement rings. Every woman wants a diamond.


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    • Paradise7 profile image

      Paradise7 5 years ago from Upstate New York

      What a beauty! Lovely diamond, lovely hub. Thanks!

    • Kris Heeter profile image

      Kris Heeter 5 years ago from Indiana

      Very interesting - thanks for sharing how the color forms! I always wondered about that.