Sightholder
Encyclopedia
A sightholder is a company on the Diamond Trading Company
's (DTC) list of authorized bulk purchasers of rough diamond
s. DTC is controlled by the De Beers Group
, the single largest producer and purveyor of rough diamonds in the world. In May 2006, DTC released a list of the 93 sightholders on its website.
The DTC Sightholder list was further reduced to 79 companies worldwide in December 2007. The list of selected companies for the 2008-2011 contract period was published in April 2008.(http://www.dtcsightholderdirectory.com/Sightholder/)
Diamond Trading Company
The Diamond Trading Company is the rough diamond sales and distribution arm of the De Beers Family of Companies. The DTC sorts, values and sells approximately 75% of the world’s rough diamonds by value...
's (DTC) list of authorized bulk purchasers of rough diamond
Diamond
In mineralogy, diamond is an allotrope of carbon, where the carbon atoms are arranged in a variation of the face-centered cubic crystal structure called a diamond lattice. Diamond is less stable than graphite, but the conversion rate from diamond to graphite is negligible at ambient conditions...
s. DTC is controlled by the De Beers Group
De Beers
De Beers is a family of companies that dominate the diamond, diamond mining, diamond trading and industrial diamond manufacturing sectors. De Beers is active in every category of industrial diamond mining: open-pit, underground, large-scale alluvial, coastal and deep sea...
, the single largest producer and purveyor of rough diamonds in the world. In May 2006, DTC released a list of the 93 sightholders on its website.
The DTC Sightholder list was further reduced to 79 companies worldwide in December 2007. The list of selected companies for the 2008-2011 contract period was published in April 2008.(http://www.dtcsightholderdirectory.com/Sightholder/)