Posted on January 23, 2014 by

Incredible Blue Diamond Rough Uncovered at Cullinan Mine

It’s not often that a giant diamond rough is discovered.  It’s even less often that a giant blue diamond rough is discovered.

 

 

Alan Bronstein is the curator and owner of the Aurora Pyramid of Hope–the largest collection of fancy colored diamonds in the world.  Bronstein was quoted by the NCDIA: “In my opinion, this piece of blue diamond rough, based on its projected color yield, is the birth of a stone for the history books. The winning bid, based on potential yield and clarity could easily break the world record for price per carat for a rough diamond.

 

So how large exactly is this diamond?  A whopping 29.60 carats.  Once cut, most diamonds retain between 30-40% of their original weight.  In some cases, there will be smaller diamonds cut from the remaining rough.  Because blue diamonds are valued more for their color than their size, the diamond will be cut to maximize its color potential.  It will be exciting to see what comes of this rough, so let’s hope the buyer is willing to share that information with the public.

 

How big is 25.60 carats?  Well, here’s a 35 carat diamond for comparison:

 

giant yellow diamond

35.75 carat yellow diamond already cut and polished into a radiant cut.

 

This blue diamond may join the ranks of the priciest diamonds in the world and we’re excited to see what comes of it.  If you can’t get enough of blue diamonds right now, take a look at some of the incredibly rare ones in our collection of natural, GIA-certified blue diamonds.

 

3.02 Carat Radiant Natural Fancy Blue Diamond

3.02 Carat Radiant Fancy Blue Diamond

 

1.47 Carat Total Weight Pear-Shaped Pair of Natural Fancy Intense Blue Diamonds

1.47 Carat Total Weight Pear-Shaped Pair of Natural Fancy Intense Blue Diamonds

 

Learn more about rare blue diamonds by reading our expert guide.

 


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One Response to Incredible Blue Diamond Rough Uncovered at Cullinan Mine

  1. Sarah says:

    That diamond is IMPRESSIVE! Can’t wait to see what it looks like cut and polished! Would love to see a blue emerald cut. Fingers crossed!