How to buy a diamond
Diamonds' colors are graded on the similar scale as the alphabet, the difference being that it starts from letters D through Z. The beginning letters A, B, and C isn't used. The logic is that when GIA invented the scale they wanted to disassociate it from jewelry stores that used their own color grade scales. The colors D, E, and F are the only ones considered to be completely colorless, or as some are calling it not very correctly "white".
D is of course, the best, and the rarest and, of course the most expensive. Some famous diamonds are actually leaning towards the Z end (Light Yellow) of the scale but aren't quite special color. Of all the diamond colors available, most consumers select GIA grades from D to J color. D-E-F are the "colorless" grades, and G-H-I-J are "near colorless".
The difference in each letter grade is very subtle, and color comparison diamonds of known grades are used under controlled lighting conditions. When viewed in the face-up position, the average person begins to see color in a diamond at about the I-J range.
The special, unique colored are called "Fancy" and usually are rare too, being considered that do not fit onto the scale. Diamonds occur in every color of the rainbow.
The rarest colors are red and purple, and combinations of those two colors. Yellow and brown are the most common color of diamond, but colorless is the most popular as far as jewelry is concerned. Still nowadays, the colored diamonds are very gradually appearing in more and more jewelry stores as they become more well-known, and well set in fancy jewelries. The greens and blues are very rare, especially naturally colored stones.
In some cases, some lightly colored diamonds (light pink, light blue, etc) can be irradiated to make their color more intense. This means that via a special irradiation system, low fields of radiation are beamed into the cut and polished stone, darkening the outer part of the stone all the way around. The process is permanent and professionally accepted in the diamond industry.
Usually, an irradiated diamond should be declared to the customers by the jeweler. A natural fancy colored diamond will cost you much more than an irradiated one. Still, the most accepted diamonds are colorless because the absence of color enhances the diamond's ability to reflect a rainbow of color.
In fact, the closer a diamond is colorless, the more rare and valuable it is.
You may check the color scale for colorless to near-colorless diamonds:
On the other hand, diamonds are also sought after by collectors in their extremely rare "fancy colors". The "fancy" diamonds, which are rare and very expensive, reflect the colors of the rainbow and dazzle in brilliant combinations of red, pink, blue, yellow, orange, green, brown and black. Of these, yellow is the most common colored diamond and became very popular, while pink, red, blue and green diamonds are extremely rare. Colored diamonds also tend to be smaller than other diamonds and they are cut to maximize color, not clarity.
This is the color scale for brown diamonds, also called "Champagne". There are essentially 7 degrees of Champagne color intensity for brown, with no secondary colors:
There are some modern techniques and various ways of "treating" a diamond, such as heat, which can be used to intensify or enhance the color. However, these treated stones are worth far less per carat than their natural counterparts, and it has to be mentioned in the diamond jewelry certificate.
Adorri® adheres to the highest quality standards and does not sell treated diamonds. We only offer natural colored diamonds, of the highest quality of its price.