The process of natural diamond formation is a fascinating one indeed. Natural diamonds are found deep inside the Earth and take billions of years to form. So the stones that we have and use today were actually made many hundreds and thousands of years ago. The time and taken to form is what makes them rare, precious and so highly-priced. Geological experts are of the opinion that these diamonds were actually formed inside the Earth’s mantle. Volcanic eruptions brought them closer to the surface and made it easier for man to mine them out.
Out of all the diamonds in the world, colored diamonds are the rarest. For every 10,000 white diamonds, there is only 1 colored diamond found. For many years man thought that diamonds were only white until he stumbled upon differently colored ones. White diamonds are commonly used in hidden halo engagement rings. So how exactly do these diamonds get their colors and how are they formed?
To put it simply, the initial process of formation is the same as white diamonds. However, certain elements or impurities such as dust particles or other Earthly chemicals get trapped inside the diamond before it completes crystallization. These trapped elements change the hue of the diamond giving it a unique color. Natural diamonds are found in a variety of fancy colors such as pink, red, green, blue, brown, grey, yellow, black, etc.
- Yellow and Brown – Yellow and brown are the most commonly found colors in diamonds. They are a result of nitrogen impurities being trapped inside. There is an abundance of nitrogen on the Earth’s surface and the nitrogen atoms replace carbon atoms in a diamond, we get the hues of yellow and brown. The shades of yellow range from bright canary yellow to a dull, pale yellow. Brown diamonds are a result of deformities in the crystallization that allows the light to pass through, giving it a brown shade.
- Blue and Grey – Both blue and grey diamonds are found when the element Boron mixes with the structure and gets trapped inside. If nitrogen mixes with traces of boron, then we get a radiant blue color. If hydrogen mixes with boron, then a greyish tint takes over the diamond. The Hope Diamond is the most famous blue diamond in the world.
- Green– Green diamonds are a result of exposure to some sort of radiation under the Earth’s surface. Normally when radiations of red and yellow light are mixed, shades of green are formed in the diamonds. Depending on how long and strong the exposure was, the color is either scattered through parts of the diamond or covers it completely. The most famous green-colored diamond is the Aurora.
- Pink and Purple – These are really rare colors, out of which purple ones are almost never found. Red and pink have no impurities in them. The colors are purely a result of internal defects known as a lattice. The changes in the structure cause light to pass through it differently and so we get a deep red or more often a softer pink shade. Purple diamonds are formed while traveling from the Earth’s magma to the surface. Plastic deformation may be the reason. The Purple Orchid is the most famous purple diamond in the world.
- Black – Black diamonds are formed when graphite or iron form inclusions in the stone. Unlike other colored and white transparent diamonds, the black one is opaque. The most famous one is the Black Orlov.
The prices differ based on the rarity of the colors. Colored diamonds are graded differently as well. Nature sure does fascinate us with its inventions every single day. You can find beautiful jewellery of cheaper options like lab grown diamond engagement rings as well. Do check them out.