What knowledges do you need to buy a diamond? First of all, the value of a diamond determined by “4C”. This abbreviation means: “carat”, “color”, “clarity”, “cut”.

Carat - The weight and size of a stone is expressed in carat.

Small size: <0,29 carat
Medium size: 0,3 - 0,99 carat
Large size: >1 carat

Colour - The colour gradation of a colourless diamond ranges from D (colourless) to Z (yellowish).
Clarity - Most diamonds have impurities, called inclusions.
Cut - The cut is what form the proportions of a stone, make it look symmetrical and shiny.

Also there are three types of inclusions. The most common internal inclusions can be different form of coal, clouds and ‘feathers’. The clarity of the diamond can be flawed in two ways: external and internal impurities. First one is depended on human factor like cutting process or daily use result.

The peculiarity of the global diamond market is the principle of separation of mining and processing of stones. Total reserves are estimated at 2 billion carats. Diamonds are produced in over 26 countries with the main volume mined by only five. These countries are South Africa, Australia, Botswana, the Republic of Congo and Russia. The world's largest diamond cutting centers are USA, Belgium, India and Israel. Together they cut 65% of diamonds mined. Although diamonds can be found in more than 20 countries of the world, almost all production is concentrated in eight of them: Botswana (24%), Russia (20%), Canada (15%), Angola (12%), South Africa (11%), DR Congo (8%), Namibia (6%), Australia (2%).

There are hundreds of mining diamond companies in the world, but basically all mining is concentrated in several large enterprises: these are ALROSA, De Beers, Rio Tinto and Bi-HSP Billiton.

The price list of Rapoport is considered the most popular among foreign price lists. It is a summary of the diamonds supply on the New York market expressee in dollars. The list is regularly compiled on the basis of data obtained from surveys.

Russia ranks first in the world in terms of the volume and value of diamonds mined. The ALROSA Group produces 93% of all diamonds in Russian Federation and is the leader of the global diamond industry.

The diamond market is too monopolized, and this problem should be solved. That’s why we have decided to create Diamond Open Market, where you can find fair prices instead of manipulated.