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Their extraordinary size! Large diamonds are extremely, especially high quality large diamond, and therefore highly valuable. The Cullinan diamond is the largest rough diamond ever found. Uncut, it weighed 3,106.85 carats. It was cut into multiple diamonds, the largest of which is 530.3 carats, called the Cullinan I. The Hope Diamond is45.55 carat , and is especially regarded for its gray-blue color.
Both are large stones:The Hope Diamond is blue-ish in its colour; andThe Cullinan for its size as a raw stone, more than 3,000 carats.
The Cullinan diamond is the largest rough gem-quality diamond ever found, at 3,106.75 carats (621.35 g). From it, several large diamonds were cut.
According to Wikipedia: The Cullinan Diamond, was found in "Cullinan, a small town 30 km east of Pretoria, Gauteng, South Africa, and "... was cut into three large parts by Asscher Brothers of Amsterdam, and eventually into nine large gem-quality stones and a number of smaller fragments." You can read more about this stone, below.
The largest diamond ever found is the Cullinan Diamond, which weighed more than 3,000 carats. It filled a grown-man's palm. It has been cut down into several 'minor' diamonds, all in the possession of the British Crown Jewels and the Royal Family.
Your answer may depend on the clarity of the stone. A diamond with a flaw, say rated VVS1, that can be re-cut to remove the flaw so that it can be rated as Flawless, may increase in value after the work is complete. A diamond that loses carat weight in such a cut without increasing the clarity of any part of the stone or enhancing a fancy colour, may lose value, even when the combined value of the pieces is considered. This issue is a rare one, since most diamonds are about the size of a garden pea. It is an issue, however, that is faced by owners of large diamonds -- probably larger than 20 carats, and is especially a consideration for owners of very rare, very large diamonds, such as the Cullinan. When found in the early 1900s, the Cullinan weighed more than 3,000 carats and remains today the largest raw diamond ever found. Finally, remember that a raw diamond loses about 60% of its total carat weight when it is cut and polished to become a gemstone.
One large heart diamond beneath a small heart diamond means "Love is forever"
massive
A 625 carat diamond would be a very large diamond, weighing 625 carats.
The largest raw diamond ever found fit into the palm of a grown man's hand. (The Cullinan diamond, gifted to the British Monarchy in the early 1900s.) What this means is that you probably won't be able to find a raw stone large enough from which to craft a sword. However, even though the practical creation of a diamond-bladed sword is not currently possible, it is possible to shape diamonds in such a way as to cut other objects. In fact, most diamonds, rubies, sapphires, and other hard precious and semiprecious stones are cut using diamonds. If we ever discover an effective way to create artificial diamonds, diamond swords could become a possibility.
Any large diamond deserves identification by a certified gemologist, who can tell you whether or not it is fake.
A diamond weighing 14 carats would be a relatively large diamond. Carrot is a root vegetable.