'Value' implies a transaction for money.
The largest and most spectacular diamonds in the world generally do not change hands for money; they change hands as gifts or often, spoils of war.
The highest quality, gem-quality diamonds have been found in South Africa and Zaire. These include the Cullinan Diamond, and the Millenium Star, respectively. Other spectacular diamonds have been found in India.
You can read more about these named diamonds, below.
The Hope is not the most expensive diamond in the world, because its purchase price remains confidential. Other large, rare and famous diamonds have changed hands, but not necessarily for money.
yes not only that but the most expensive gem of all at more than $200 million
No, it is one of the most rare stones on Earth.
David Bushnell was ingenious in inventing a submarine.......which today one of our most valuable Naval vessels.
Probably a red diamond, since it is the most rare natural colour.
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the hope diamond is the largest. It is in the Smithsonian Museum in Washington D.C.
The most valuable stone is typically considered to be the diamond, followed by sapphire, ruby, emerald, and then semi-precious stones such as amethyst, citrine, and peridot. The value of a stone is determined by factors such as rarity, color, size, and clarity.
crimson diamond at 2.7 million
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The jewelry grade (white) diamond that is most valuable is identified as a D-colour stone. In fancy coloured stones, both blue and pink stones are valuable, although red might be the most rare, and therefore the most valuable. See the link, below.
Yellow diamonds cost more than colorless diamonds most of the time. There is only one yellow diamond in the world for every 10,000 white diamonds, which is the reason they are considered so valuable. Also, because the amount of nitrogen in the diamond is always different, every yellow canary diamond is one of kind, also adding value. It is uncommon for yellow canary diamonds to be found in diamond mines. Yellow diamonds from the mine are often not as vibrant yellow, and therefore are not as valuable as the ones found naturally in the ground.