Leibish Polnauer's Leibish & Co is an excellent supplier in fancy color diamond field, if you are looking for the good quality blue, red and green diamonds, just login their website (click the link in the last page). Fancy color diamond is the diamond with different colors, the value of fancy diamond is much more expensive than colorless diamond, because of the colorful gem is very beautiful and extremely rare in the world. As one of the famous gem associations, GIA established the 4 Cs standards: Clarity, Cut, Color and Carat.

Blue diamond

Because of absorb the trace boron element in the process the blue diamond, and turn into the sky blue color, the high clarity blue diamond can conduct electricity, so which is very suitable for industrial use. Looking for a vivid level blue diamond is relatively easy, not as rare as pink diamond. But find a beautiful blue diamond is difficult, because it is easy to slant gray color. The world's largest flawless blue diamond’s which is 13.22 carat, the pear-shaped blue diamond was estimate of $21 million to $25 million.

Green diamond

Green diamond is very rare, each layer by natural radiation caused by change of lattice structure in the diamond. There was a story said that a diamond cutter, came to a mine bought a green stone, after come back want to cut it into a lot of green diamond to sell, he didn't think the cut into the white, originally this diamond just received radiation surface, they didn't turn green, and lost a lot of money. So green diamond is so expensive, the first is that it's rare, the second is a high risk, and consumers to buy the money are to compensate the risk of dealer.

Red and pink diamonds

red diamond is the most expensive color in the fancy diamonds, small pink diamond with low clarity, if it's fancy intense degree, one carat assess up to 400 thousand dollars. Red diamond is different with yellow diamond, there are no other causes from outside, such as nitrogen, but itself in the form of lattice distortion produced in the process, the sun through it and cause which become red. The pink diamond is very rare and diamond particles are generally small, from pink to red through the sun light, so the red diamond is more rare and precious, the price of a 1.57 carat red diamond may reach to 5 million dollars. Pink color mixture is complex, pink mix was reddish brown, but which is not natural red, some have a plenty of mixing the orange, the price of this color is much cheaper than red diamond, so there is no investment value, but which is colorful and good-looking. About ninety percent of the world's red and pink diamond from Western Australia - the Argyle Mine, most is small

particles, Argyle average weight in 1 carat pink diamond. Mining area annual output is about 50 carat pink diamonds, which accounting for 0.0001% of the total diamond production. Pink diamond is widely loved due to their rare treasure. Argyle has his pink stones bidding meeting every year. Although Argyle diamond mining area is the main production of pink diamond, but today the largest well known pink diamond, some of the most famous in the world are mined in other areas. Existing largest pink diamond is found in southern India.

The fancy deep and fancy dark is mixed with other colors in the yellow, but which is not pure yellow, and is like add a drop of coffee in a cup of orange juice, the color of it will thicken, but it is no longer pure, the price fancy deep and fancy dark will be cheaper than fancy vivid.

The blue diamond color grading：Fait BlueLight BlueFancy Light BlueFancy BlueFancy Intense BlueFancy Deep BlueFancy Vivid Blue

The pink diamond color grading：Fait PinkLight PinkFancy Light PinkFancy PinkFancy Intense Pink

Fancy Deep PinkFancy Vivid Pink

Because there is nitrogen which led to yellow color, as we all know, diamonds are carbon element, however, it is a very high density carbon crystal, add some nitrogen in the process, then colorless diamond becomes fancy yellow diamond, yellow diamond is the entry-level inside fancy diamonds, which not only color beautiful but also affordable for many people.

Appraisal institutions are more likely take the color as first consideration for fancy diamonds, and the diamond color can only be named as fancy below Z, for yellow diamond, Although yellow color is the most common color in fancy, but the diamonds that reach vivid yellow also very rare, according to the American association of gem report, there is no more than five percent fancy vivid yellow in the yellow diamonds. The color degree from low to high is fancy light yellow, fancy yellow, fancy intense yellow, fancy deep yellow and fancy vivid yellow. The other color diamonds can be done in the same manner:

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