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The African Diamond Producers Association (ADPA) is an intergovernmental organization of leading diamond-producing nations. Founded on 4 November 2006 through the Luanda Declaration, ADPA is headquartered in Luanda, Republic of Angola.
The World Diamond Council is an organization representing the entire diamond value chain including representatives from diamond mining, manufacturing, trading and retail. The council was established in July 2000. The purpose was to create a system to keep the supply chain of diamonds as free as possible from conflict diamonds. [1] [2] [3] [4]
Each mineral has a classification number, made up of four numbers separated by dots, enabling unambiguous identification even when minerals are known by several names (synonymy). The first number represents the mineral class. The second number represents the mineral type, in some cases taking into account its atomic structure.
Diamond jewelry generally falls on the more expensive side and is considered a luxury item. With such a significant price tag attached to diamonds, it’s important to move through the shopping ...
A diamond cutter apprentice cleaving a diamond prior to cutting it, using a steel wedge-like blade and a small club, supervised by a senior cutter in the Netherlands 1946. Cleavage is a physical property traditionally used in mineral identification, both in hand-sized specimen and microscopic examination of rock and mineral studies.
The Cullinan Diamond is the largest gem-quality rough diamond ever found, [2] weighing 3,106 carats (621.20 g), discovered at the Premier No.2 mine in Cullinan, South Africa, on 26 January 1905. It was named after Thomas Cullinan , the owner of the mine.
The standard certification awards given consist of Gold, Platinum, and sometimes Diamond awards, in ascending order; the UK and Australia also have a Silver certification, ranking below Gold. In most cases, a "Multi-Platinum" or "Multi-Diamond" award is given for multiples of the Platinum or Diamond requirements.
Each grid has the clarity options on the horizontal line and the color options on the vertical line. In order to calculate the price of a diamond according to the Rapaport Price List, you need to know the size, color and clarity of the diamond. The price listed based on this information is in hundreds of dollars per carat. [3]