Some 'impurities' are known: nitrogen causes yellow, gold and green; boron causes blue, other diamond colours are not so obvious. For example, pink diamonds are probably caused by a distortion in the diamond's lattice formation: the cause remains somewhat of a mystery.
You can read more from two sources , below.
From Wikipedia: "The color of a diamond may be affected by chemical impurities and/or structural defects in the crystal lattice." You can read more about what impurities and defects cause which colours, below.
Brown diamonds are the most common colour of gem-quality diamonds found.According to its Wikipedia page:"Several causes have been identified, including irradiation treatment, nickel impurities and lattice defects associated with plastic deformation; the latter are considered as the predominant cause, especially in pure diamonds."
Pure diamonds are made solely of elemental carbon. Any colored diamonds have trace impurities consisting of various other elements. However, a pure diamond is simply carbon atoms bonded in a complex structure.
Diamonds exhibit a range of colors due to impurities, structural defects, and changes in their crystal lattice during formation. These variations can affect how light is absorbed and reflected, resulting in the different hues, including pink, yellow, blue, and green. Natural fancy colored diamonds are rarer than colorless diamonds, making them highly prized in the jewelry market.
Yellow diamonds, like all colored diamonds, get their color due to impurities or structural defects in the diamond crystal lattice during formation. In the case of yellow diamonds, nitrogen atoms are present in the crystal lattice, absorbing blue light and resulting in a yellow hue. The intensity of the yellow color can vary depending on the amount and distribution of nitrogen in the diamond.
Impurities in diamonds, in this case nitrogen, gives the diamond a yellow tint. Champagne colour may be a brand name, in the same way that Chocolate Diamonds are a brand name for a specific colour and saturation of colour, all caused by nitrogen impurities in the gem.
From Wikipedia: "The color of a diamond may be affected by chemical impurities and/or structural defects in the crystal lattice." You can read more about what impurities and defects cause which colours, below.
Diamonds are formed from carbon. Some brown diamonds may contain trace amounts of nickel -- otherwise diamonds do not contain metals.
One can find original colored diamonds to purchase from the 'Original Diamonds' website. They have diamonds listed in colors 'Exceptional White' and 'Rare White'.
The colored impurities were removed from the mixture through a process called filtration or distillation, where the mixture is passed through a filter or distilled to separate the impurities based on their different boiling points or solubility in a solvent. This helps in obtaining a purified substance devoid of the colored impurities.
Brown diamonds are the most common colour of gem-quality diamonds found.According to its Wikipedia page:"Several causes have been identified, including irradiation treatment, nickel impurities and lattice defects associated with plastic deformation; the latter are considered as the predominant cause, especially in pure diamonds."
Pure diamonds are made solely of elemental carbon. Any colored diamonds have trace impurities consisting of various other elements. However, a pure diamond is simply carbon atoms bonded in a complex structure.
Diamonds themselves are typically clear or colorless, but they can exhibit a range of colors due to impurities or structural defects. When light passes through a diamond, it can create a spectrum of colors, often referred to as "fire," which can resemble rainbow hues. However, this effect is not the same as a diamond being inherently rainbow-colored; it is a result of light refraction and dispersion. Some diamonds, known as fancy colored diamonds, can naturally appear in various colors, including blue, pink, and yellow, but true rainbow colors are not typical.
Diamonds exhibit a range of colors due to impurities, structural defects, and changes in their crystal lattice during formation. These variations can affect how light is absorbed and reflected, resulting in the different hues, including pink, yellow, blue, and green. Natural fancy colored diamonds are rarer than colorless diamonds, making them highly prized in the jewelry market.
The largest producer of chocolate and other brown-colored diamonds (champagne, cognac) is the Argyle diamond mine in western Australia. Brown colored diamonds are also found in Africa.
Yellow diamonds, like all colored diamonds, get their color due to impurities or structural defects in the diamond crystal lattice during formation. In the case of yellow diamonds, nitrogen atoms are present in the crystal lattice, absorbing blue light and resulting in a yellow hue. The intensity of the yellow color can vary depending on the amount and distribution of nitrogen in the diamond.
Chloroform can turn yellowish due to exposure to light and air, which causes it to undergo degradation processes, such as oxidation, leading to the formation of colored impurities. These impurities can cause the chloroform to take on a yellowish hue. Storage in amber-colored containers and avoiding exposure to light can help prevent this discoloration.