May 28, 2021 2 min read

Blue diamonds :The main component of blue diamonds is carbon. Because of the fluorescence of the diamond, the diamond looks blue, which is different from sapphire (AL2O3, mainly Fe, Ti, and color). Blue diamonds are very rare and expensive.

Main originedit

①India

Many famous and historic blue diamonds were discovered early in India. For example, the most famous 112-carat blue diamond "Hope" was discovered in the Kollur Mine along the Krishna River Valley near Golconda, Hyderabad, India. Diamond).

②South Africa

The Cullinan Diamond Mine is one of the most famous diamond mines in the world. It once produced the world's largest rough natural diamond-3106 carats of "Cullinan Diamond" (Cullinan Diamond). This mining area has so far mined more than 800 diamonds of more than 100ct, of which 140 diamonds are more than 200ct. Many famous blue diamonds have been mined from the Cullinan mine.

③Australia

Australia’s Argyll Ore is the world’s largest supplier of diamonds, and most of the 1% of the mined diamonds contain hydrogen-deficient blue diamonds.

 

②Weight

Natural blue diamonds are very rare, with a heavier carat weight, and their price will increase geometrically.

Of the 4 blue diamond lots with a carat unit price of more than US$3 million, 3 of them exceeded 10ct. 3 to 6 carats have the ability to set a world record, and blue diamonds of 10 carats or more are absolutely rare and hard to find.

③Cut

In the 4c ​​standard for measuring the value of diamonds, only the cut is directly affected by man-made, and the excellence of the cut directly affects the fire and sparkle of the diamond.

Diamond cut assessment includes 5 grades from Excellent to Poor.

④Clarity

Blue diamonds hide flaws to some extent due to their color.

 


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