Certain
The Cullinan Diamond
Its price is estimated to be over $400 million making it one the worlds most expensive diamonds. The Cullinan Diamond was mined in 1905 in the Cullinan mine in Africa. At the time of mining, the diamond weighed 3,106.75 carats.
The Cullinan Diamond is the largest gem-quality rough diamond ever found, weighing 3,106 carats (621.20 g), discovered at the Premier No. 2 mine in Cullinan, South Africa, on 26 January 1905. It was named after Thomas Cullinan, the owner of the mine.
Topping our list of the most expensive diamonds in the world is the legendary Koh-I-Noor. Weighing in at a massive 105.6ct, the most expensive diamond in the world is oval shaped. Steeped in mystery and legend, the stone is believed to have been mined in India in the 1300s.
The Golden Jubilee diamond
In 1997, the diamond was presented to the King of Thailand after it took specialists a few years to cut and polish. Today, the largest finished diamond is owned by the Royal Family of Thailand.
Russia. Russia is said to have the world's largest and richest diamond reserves. By volume, they are the greatest producer and exporter of rough diamonds in the world.
Although most black diamonds on the market today are either superheated or irradiated to an almost black color, natural black diamonds do exist, though they are extremely rare. Carbonados, sometimes called "black diamonds," are a distinct and unusual polycrystalline diamond material.
The celebrated Regent Diamond has been on display in the Louvre in Paris since 1887. It is widely considered to be the most beautiful and the purest diamond in the world. But the Regent Diamond once went by another name.
Red diamonds are the rarest of the colored diamonds, with only 20-30 existing in the entire world. They get their beautiful red color from a rare process during their formation, which changes the crystal structure of the diamond and causes light to pass through it differently than colorless diamonds.
The most expensive diamond in the world is owned by the British Royal Crown. The Kohinoor gem currently resides at the HM Tower of London where it is displayed as the central diamond of the Queen Mother's Crown.
Widely considered the most famous diamond in the world, the Hope Diamond receives its name from Henry Thomas Hope and was discovered centuries ago in the southern region of India. Long before the fabled bad luck associated with its owners, the Hope Diamond has an illustrious history.
#1 - The Hope Diamond
Probably the most well-known of all gems, the 45.52-carat Hope Diamond has a past as colourful as the stone itself. The stone's story as we know it begins in 1642, when a French merchant purchased it and then resold it a few years later to King Louis XIV of France.
Dubai is deemed as one of the cheapest places to buy diamonds and rightly so. There's a reason that it is regarded as one of the world's top three diamond trading centers—the other two being India and Belgium.
Black diamonds are much more rare than colorless diamonds, which may come as a surprise if you're familiar with these diamonds' price points– black diamonds are much less expensive than colorless diamonds. Wondering why black diamonds are more affordable than colorless diamonds? It's simply an issue of demand.
Ammolite. In 1981, the World Jewellery Confederation (CIBJO) declared ammolite a new organic gem. Occurring in limited deposits in the Rocky Mountains, this gem material is much rarer than diamond.
The pear or marquise cut is often the least expensive diamond form. Because they are less common than round, princess, and cushion cuts, these diamond shapes are less expensive. It's crucial to remember that a diamond's price is also influenced by carat weight, color, clarity, and cut quality.
The Sovereign's Sceptre with Cross, 1661
It was transformed in 1910 for George V by the addition of the spectacular Cullinan I diamond. At 530.2 carats, it is the largest colourless cut diamond in the world. The Cullinan Diamond was discovered in 1905, in modern-day South Africa.
Blue diamonds are Type IIb diamonds, which are extremely rare and valued very high. Most blue diamonds are rare, but blue diamonds with very high color intensity that display a deep blue color are the rarest. Of course large stones are even harder to come by and much pricier.
Pink diamonds fall under the category of Type I or Type IIa diamonds. tend to have an irregular shape. The Argyle Mine, the world's current main source for pink diamonds, has developed their own pink diamond color classification system separate from that of the GIA.
If the small stones on your diamond engagement ring are between 1 and 2 points (0.01-0.02 carats), it may be appraised at a price range of $300 to $700 per carat. Larger chips or stones at 0.10 carats may result in you being able to get $1000 or more for your jewelry if the diamonds score high on clarity and color.
Diamond is only formed at high pressures. It is found in kimberlite, an ultrabasic volcanic rock formed very deep in the Earth's crust. The extreme pressures needed to form diamonds are only reached at depths greater than 150km.
Learn about five of the country's most unique gems. There are three famed diamond mines in Australia: Argyle, Ellendale and Merlin. Combined, the mines have supplied millions of carats worth of gems to the global market, and individually they have produced some of the rarest, most exquisite stones ever recovered.
The vast majority of diamonds form between about 150 to 200 km below Earth's surface. But a handful come from much deeper.