For pure and large diamonds highest prices are paid

Diamonds are the most precious gems, and it is shrouded in numerous myths and legends surrounding these special stones. Quality and price of polished diamonds can be determined by four different criteria. These are also known as the so-called four C (for evaluation).

It is from these criteria to the mass, purity, color and finish. The mass of a diamond is expressed here in carats, a carat is equal to 0.2 grams in general to describe the purity, there are different gradations, with flawless diamonds have no obvious inclusions, the most valuable.
In general, diamond has no color. But there are colored diamonds, which are referred to as "fancy diamonds" and are especially rare. Above all, come in intense colors, fancy diamonds are extremely rare and therefore very valuable. Some fancy diamonds that are of particular size and beauty of color, have even gained a worldwide reputation. Generally, the cut of a diamond for its so-called "fire" elemental, and these now be simulated on a computer and by machine.

In addition to diamonds, including rubies, sapphires, opals and be counted among the precious stones which are used in various pieces of jewelry use. The majority of today's diamonds are mined by a few multinational corporations.

The very high prices, which are generally paid for the stones on the market, provide, especially in underdeveloped regions of diamond digging under inhumane conditions. Furthermore, gains were used in the diamond trade on the African continent, to fund civil wars, which is why we are now trying to suppress the trade in conflict diamonds through certificates.