Carbonado is also known as Black Diamond. It is actually a poly crystalline substance that is available on the earth, especially in the mines. People have a great liking for this natural diamond and sometimes the demand grows high. Carbonado is used in making jewelry and crystals.

Therefore, special techniques have been innovated for making these polycrystalline substances from smaller crystalloids. This is an artificial method and is called Crystallography. This word originates from the Greek word crystallon meaning cold drop or frozen drop. The word graphein means something to write.

In the old days, the making of the crystals depended mainly on studying the geometry of the crystals. This was a tough method and therefore research was made into this field. Nowadays, crystallography depends mainly on studying the process of diffraction, which is done through X-Rays. There are three types of diffraction. They are neutron diffraction, electron diffraction and X-Ray diffraction.

The mantle-derived inclusions are lacking in the artificial carbonadoes. Moreover, the value of the carbon isotopes is also very low. The radioactive inclusions which makes the natural carbonados brighter and the natural luminescence is also lacking in the artificial carbonadoes. Therefore, people prefer the former. Yet due to lesser availability, artificial carbonadoes are also used.

[tags]black diamond,diamond cut,diamond clarity,diamond color,diamond carat,lab diamond,synthetic diamond[/tags]

There’s hardly any person in the world who does not crave for diamond. But have you ever thought how the cost of a diamond is calculated? Martin Rapaport is the person who solved this problem by composing Rapaport Diamond Price List, which is popularly known as the Rap, or the List.

The best way to calculate diamond prices is to use Rapaport Diamond Report that is composed of sheets containing various price lists.

However, these price lists can be accessed only by subscription and are meant for the professionals only. The color of these sheets is always red so that it cannot be photocopied or faxed. The price lists are made according to the weight ranging from 0.01 to 5.99 carats and of course according to the shapes. The price rises are printed in bold while price falls are printed in bold italics. You should know that cut/shape, symmetry, polish and fluorescence are not included on the list because these aspects can lead to significant variations in price.

The prices specified on the lists are expressed per carat – it is $100s per carat. You can find the weight of the diamond on the first line of the list along with the date and the cut. The clarity grade from IF to I3 can be found on the second line.

In the first column, you can find the color grade from D to M. Thus to calculate the price of a diamond you just need to move horizontally and vertically according to the color and the clarity. By moving this way, you can know its price in dollar per carat.