what is the structure or chart of a diamond clour dots?

Diamond color for regular clear diamonds can range from D to Z. (D is the whitest.) A diamond with a color grade of D is considered 100% Colorless and are very, very rare. As with all things rare, they are the most expensive.

E & F diamonds are considered Colorless, and that means it's almost impossible to see traces of color in these diamonds. (Again, this means they are pretty darn expensive.)

G & H diamonds are also almost impossible to see color in, and they are called Nearly Colorless. Unless you look at them next to a "master stone" with a higher grade, you won't be able to see any color at all. These guys are also rare, but not quite as much, so they are a good bang for your buck.

I and J diamonds are actually also considered Nearly Colorless. When you look at an I or J diamond when it is loose, you might be able to see slight shades of color, but once the diamond is mounted in a piece of jewelry, you won't be able to see any color unless you use magnification of some kind. Because these types of diamonds are clear for all intents and purposes when it comes to jewelry, and because they are a good value, these are the ones most often used for rings, earrings, pendants, etc.

Of course, as you move further down the alphabet, the color becomes more and more detectable. So, it's important to consider how much you have to spend and what type of piece you will be using the diamond in. It might be worthwhile to buy a slightly smaller diamond with a higher color grade rather than a big one with a lower grade.

I'm not sure exactly what you mean by a "structure" or a "chart" of diamond color dots, but I have seen a really cool interactive tool for diamond color at Zoara.com.

Hope this helps,
Lucy in the Sky

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