Fancy Colored Diamonds
We know many potential diamond buyers
spend a lot of time researching and trying to understand the different
diamond characteristics. Most people do this because they want to select
the best stone to match their lifestyle, needs and budget.
When
it comes to diamonds, color is often a major consideration for
consumers looking to buy engagement rings. In most markets, colorless
diamonds are preferred over those with color tints because of social
stigma.
Colored diamonds, on the
other hand, represent a niche market for shoppers who prefer to see
saturated colors in their jewelry. Did you know that fancy colored
diamonds can come in various shades of yellow, blue, green, red, purple,
pink and even as mixtures of different colors?
So, How Do Diamonds Get Their Colors In Natural Conditions?
The most common causation of color is due to the presence of trace elements inside
the diamond’s chemical composition. For instance, the presence
of nitrogen gives the diamond a yellowish tint. Since nitrogen is so
abundant in the environment (about 70% of air is made up of nitrogen),
it is no surprise that the majority of diamonds display yellowish
tones. On the other hand, the presence of Boron results in a bluish
looking diamond which is super rare and is highly valuable.
In nature, when diamonds are formed or deposited near radiation sources deep
within the Earth, a colorless rough diamond can turn green overtime.
The intensity of the green hue is directly proportional to the type of
radiation (gamma/neutron radiation yields better colors) and the duration in which the diamond was exposed to.
Sometimes, rough diamonds with sizable mineral inclusions like peridots (dark green) or garnets (red) may exhibit color flashes based on the color it picks up from the inclusions.
Another phenomenon which can create fancy colored diamonds comes
via strain and color zone defects in the crystal lattice. As a result of
a distorted lattice, the diamond absorbs certain wavelengths of light
which causes it display unusual colors. Perhaps the most famous examples
of such diamonds are the princess cut diamond earrings.
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