Diamonds are Forever

Diamonds are formed deep within the Earth about 100 miles or so below the surface in the upper mantle.

Diamonds are quite old. At least hundreds of millions of years old, but in most cases billions of years old, anywhere from one to three billion years old, a time when the earth was probably hotter than it is today and so conditions were perhaps more appropriate for diamond growth.  You can read more about diamonds at the Smithsonian. Lately diamonds have been hot so to speak.

The most outstanding ones for me are the diamonds with color.

The Red Diamond
The 5.11 ct Fancy Moussaieff Red. Most other reddish diamonds are “cooler” in appearance and termed purplish red. Courtesy of William Goldberg Diamond Corp.
A purplish red 0.76 ct diamond from the Argyle Mine in Australia. Courtney of Gia
Vivid Oppenheimer Blue Diamond

According to Christie’s website, this 14.62 ct. diamond called the Oppenheimer Blue, is the largest fancy vivid blue diamond ever offered for auction.

Shown here, in a platinum ring, flanked on each side by a trapeze-shape diamond, accompanied by its original Verdura mounting. (Photo courtesy of Christie’s)

“The Oppenheimer Blue can only be described as one of the rarest gems in the world,” said Curiel. “It is the gem of gems.”Those details are part of what makes the gem so rare. Rahul Kadakia, Christie’s head of jewelry, told CNBC that less than 2 percent of the diamonds found in the world are blue, and only 10 percent of them are larger than a carat.

“Blue diamonds range from a very faint baby blue, a powder blue, to a dark, dark-indigo blue [that’s] almost too dark,” Kadakia said. “Vivid is the purest, most open, almost a happy blue color.”

Indigo Blue Diamond
30.82-carat The Blue Heart Diamond


Vivid Orange Diamond

The Orange: The largest Fancy Vivid Orange diamond in the world.

The fancy vivid orange pear-shaped diamond weighing approximately 14.82 carats.  Termed ‘fire diamonds’ by famous gemologist Edwin Streeter, pure orange diamonds remain incredibly rare, with so few having been graded that the exact cause of their colour remains a mystery. Sold for: CHF32,645,000 ($35,543,804) on 12 November 2013 at Christie’s in Geneva
The Graff Vivid Yellow Diamond
The Graff Vivid Yellow, the colour of a daffodil and weighing 100.09 carats, part of Sotheby’s Magnificent Jewels and Nobel Jewels.
Dresden Green Diamond

The most famous natural-color green diamond is considered by many to be the Dresden Green . GIA. The green color in a diamond is the result of exposure to radiation. The source of the radiation can be naturally occurring or performed in a laboratory. Natural radiation is the result of the diamond being exposed to radioactive uranium from rocks near the earth’s surface.

The largest-known natural green diamond weighing approximately 41 carats
The Dresden Green diamond set in a hat ornament made by Prague jeweler Diessbach in 1768. Photograph by GIA
The Argyle Violet Diamond
The Argyle Violet Diamond
This extremely rare diamond is 2.83 carats, polished in an oval shape, and known as The Argyle Violet. Photo: Rio Tinto

Rio Tinto has recovered its largest ever violet diamond from its Argyle mine in Western Australia.


Unique Pink Diamond

The “Unique Pink,” the largest Fancy Vivid pink pear-shaped diamond ever offered at auction, came to Sotheby’s New Bond street galleries in London. According to Ehud Laniado, the head of Cora International “People are bidding very high prices, which means that they don’t see diamonds as just an expense,” he says. “They are starting to be seen as an asset, more than something you just use in jewelry. In 11 years, pink stones have gone up by 350 percent. Compare that to gold, which only went up 150 percent.” With this said the unique point is made for the pink.

Just 0.1 per cent of the 20 million carats of rough diamonds produced annually are pink, and, of these, the number weighing more than half a carat would fit into the palm of your hand.


3 thoughts on “Diamonds are Forever

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  1. I love that we share the same first name. Kathleen, nothing more to say than EXQUISITE COLORED DIAMONDS. Sad to say, I lost my green diamond engagement ring when I went in for surgery. I am still crying inside. It was purchased from Seng Jewelers in Louisville, Kentucky.
    Best wishes,
    Kathleen A. Marlowe

    1. Thank Kathleen for reaching out to me. I will never forget your name! We do share a love for colored diamonds I have an orange diamond for my engagement ring. I am so sorry to hear that your ring was lost. I hope your surgery was a success. When you are in the market for a replacement ring perhaps I can help. I made a beautiful green diamond engagement ring for my nephew. Enjoy your day Kathleen

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