La Historia de los Diamantes

Los diamantes se formaron hace miles de millones de años, como elementos de carbono que fueron transformados bajo una combinación de condiciones con muy alta presión y temperatura; una situación que sólo puede ser encontrada bajo la superficie de la Tierra. Encuentran su camino por medio de pipas de Kimberlite después de intensas erupciones volcánicas.

Diamonds Mining

Diamonds are mined today in several ways:
Alluvial mining: diamonds which are deposited after natural erosion, and come to the surface via river beddings, oceans and shorelines.
Open Pit Mining: diamonds which are discovered in the nearby of a kimberlite pipe, in a sandy underground, so no tunnelling needed.
Hard Rock Mining: diamonds embedded in a rocky environment, so underground tunnelling is necessary to reveal them.

Diamonds are found in different sites around the globe, but predominantly in Africa, Russia, Canada and Australia.
Due to the extreme conditions in which they were formed, diamonds are still known today as the hardest existing natural material, with several characteristics.

Their rareness also exemplifies why diamonds have to be handled with the greatest precision and attention, so that none of their uniqueness is lost.
Our experienced craftsmen at DHV are working conscientiously to obtain this goal, every day, throughout the whole polished process

From Buying to Sorting and Certification

Rough Buying: Our rough department is looking daily to search for the appropriate goods. We buy our rough directly from the local market and worldwide sources and we attend global tenders to acquire large rough stones for our high end segment.

Planning: When rough stones are purchased, they undergo a detailed process of planning, to investigate and determine how they have to be cut. Through advanced 3D technology in combination with our experience, we are aiming to obtain a polished result with perfect proportions, and therefore super brilliance.

Laser/Sawing: After planning, the decision is made whether a rough stone will be polished towards a single stone, or separate diamonds. In the case of partition, the stone will be either sawn or lasered into two or multiple pieces, which will lead to several polished stones.

Bruting: In this process, the shape of the final polished diamond is determined. The stone is rounded into a conical shape, after which it will be worked on further. In this process, diamond cutters use digital imaging to define the exact dimensions and speed of rotation in order to reach optimal results.

Polishing: The final stage in the polishing cycle. In the faceting process, the diamond cutter creates each small facet, holding the diamond in a special pad, at the correct angle. It is then grinded against a diamond wheel, which is a rotating blade, treated with diamond powder and special oil. The experience of a top diamond cutter can make a huge difference in the final polished result. Bringing out the ‘fire’ and ‘life’, meaning the maximum sparkle and brilliance of the finished polished product, is a very delicate and time-consuming process. The polisher needs to reveal the sheer beauty of each rough diamond towards its potential. Whether it is a round brilliant cut stone or fancy shaped stone (pear, princess, emerald, marquise, heart shape …), every polished diamond is a unique item.

Sorting: After the production process, each diamond is carefully evaluated in our offices. Some of the stone are sent to America (GIA lab) or Antwerp (HRD or IGI) the get certificates.