The rarest natural diamond colours are probably red, green and blue.
If you can find a large stone in one of those colours graded as flawless or very slightly included with a cut that shows off the stone's colour and high clarity, you will probably pay the most per carat for this stone.
Diamond.
According to Wikipedia, the Dresden Green Diamond, the most famous green diamond, owes its "...unique apple green color is due to natural exposure to radioactive materials..." Some green diamonds are made more green after being irradiated in order to enhance its colour. This process treats or enhances a diamond, and therefore, makes it less valuable than a naturally coloured diamond. A certified gemologist can identify such diamonds.
The most valuable metal on Earth is Californium.
A diamond is valued by its cut, clarity, carat weight and colour. Depending on your taste, you can buy a diamond in most any colour; and pay most any price for the stone you want. "Good" is relative. The highest colour grade for a 'colourless' diamond is D. Otherwise, in a coloured stone, the highest colour grade is Vivid Fancy [colour].
The best type of synthetic diamond would most likely be Cubic Zircona, a popular fake jewel that is much cheaper than diamond and unlike other fake jewels it will not change color or become tinted by an outside source for very extended periods of time.
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.
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.
I would say that Green Diamonds are next. Of course it is the pure green colors that are the most valuable, colors like Fancy Intense Green and Fancy Vivid Green.
yes.
Diamond
Diamond.
its diamond's,
No it is not. Sapphires are one of the most precious and valuable blue gemstones and are known for having an excellent color, hardness, durability, and luster.
Probably not. In the ancient world, diamonds were not considered valuable as they are today. Pearls were the most valuable followed closely by emeralds.Probably not. In the ancient world, diamonds were not considered valuable as they are today. Pearls were the most valuable followed closely by emeralds.Probably not. In the ancient world, diamonds were not considered valuable as they are today. Pearls were the most valuable followed closely by emeralds.Probably not. In the ancient world, diamonds were not considered valuable as they are today. Pearls were the most valuable followed closely by emeralds.Probably not. In the ancient world, diamonds were not considered valuable as they are today. Pearls were the most valuable followed closely by emeralds.Probably not. In the ancient world, diamonds were not considered valuable as they are today. Pearls were the most valuable followed closely by emeralds.Probably not. In the ancient world, diamonds were not considered valuable as they are today. Pearls were the most valuable followed closely by emeralds.Probably not. In the ancient world, diamonds were not considered valuable as they are today. Pearls were the most valuable followed closely by emeralds.Probably not. In the ancient world, diamonds were not considered valuable as they are today. Pearls were the most valuable followed closely by emeralds.
no
Diamond
the hope diamond is the largest. It is in the Smithsonian Museum in Washington D.C.