The diamond is not only the hardest, but also the oldest gemstone. It consists of chemically pure carbon, which crystallised under high heat ( 2000°C) and enormous pressure (70,000 kg/cm²). The formation process began about 3 billion years ago & took place in the earth's interior at a depth of 150 to 200 km. The diamondiferous rock reached the earth's surface through volcanic eruptions.
In the primary mine, the diamond-bearing source rock is mined within the volcanic vent. The secondary deposits are located within rivers and on seashores. Over thousands of years, erosion has eroded the volcanoes and transported the diamonds via river water.
The actual volcanic crater is excavated to a depth of about 300m by surface mining. Up to a total depth of 1000m, the diamond-bearing parent rock (kimberlite) is then loosened from the earth in underground mining via shafts and tunnels and crushed and sorted at the earth's surface.
The simplest method, which is also used by independent diamond prospectors, the "diggers", is washing out the river debris. Rock containing diamonds was carried away from the actual volcanic vent by watercourses. In the past, the rough diamond was washed out by hand with primitive pans, but today it is washed out and removed from the rivers and seashores with elaborate machines.
Only the art of cutting and polishing brings out the full beauty of the diamond. The perfect cut enables the optimal use of light and thus gives it its unique brilliance and fire. In order to work on a diamond - due to its unique hardness - again only diamond dust can be used. In the past, it took 4 to 8 hours just to saw through a rough stone of 1 carat. Today, lasers are used for this. The entire processing can take days or months. The cut determines the path of light in a diamond. The aim is to achieve the highest possible refraction of light.
The round or brilliant cut is considered the classic and also most popular diamond shape.
We offer diamonds in all sizes and qualities, also precisely calibrated according to diameter or weight. The diameters vary on average with 0.05- 0.1 mm.
We have specialised in the colours D-G (Top Wesselton) and the purity VS and SI.
Our delivery time is usually 1-2 working days.
The fancy cuts include the oval, marquise, drop and heart cuts derived from the brilliant cut. The radiant and princess cuts are among the newer fancy cuts.
The emerald and baguette cuts belong to the classic staircase cuts.
Diamonds are suitable as a means of securing value, but not or only to a very limited extent as a means of increasing one's wealth in the short term. Pure value protection has received more and more attention in recent years. By buying an investment diamond, one can hedge one's assets well against inflation or possible crises. They are usually a tax-neutral investment and do not attract capital gains tax.
Flawless brilliant-cut diamonds in fine white and high-fine white with a very good cut from 0.50 ct to 2 ct are best suited for value protection. The larger the brilliant-cut diamonds, the more positive the value development. The resale of a larger stone is, however, more difficult.
If you have any questions about investment diamonds, we will be happy to advise you personally.
Why do I need a certificate when buying a diamond?
What do I have to consider when buying a certified diamond?
How do I know if the diamond and the certificate belong together?
The diamonds have a laser inscription in the diamond's roundel. This is only visible under 20x magnification with a trained eye. However, the inscription clearly assigns the respective certificate to the diamond.
Among the white diamonds, the colours D - G are most in demand. When the colour concentration is low due to the influence of nature, diamonds have less value. Only as soon as there is a high percentage of colour in the diamond again, they are popular again and there is an increase in value. This is the case with the colour scale for diamonds when the colour is thinner than the Z colour.
The so-called fancy diamonds, where the colours in the diamond are all of natural origin, are traded in unbelievably high prices. Especially the pink diamonds fetch the highest prices. This is because pink and blue diamonds are very rare. Even of the ruby diamonds, only over 10 carats are known in the world.
In our colour treated diamonds, the colour is integrated into the diamond through an identical imitation of the natural conditions. The technique used for this is called HPHT (High Pressure, High Temperature). Incidentally, this is the same technique that is used for the production of artificial diamonds.
The colored diamonds that occur in nature are formed by the following addition next to the pure carbon: