Since it is illegal in the United States to sell and trade conflict diamonds, the majority of jewelers offer conflict-free diamonds and are transparent about their diamond sources. The diamond supply chain is a long one, so tracking each diamond from source to final sale is very challenging. Also, while the KPCS has drastically decreased the presence of conflict diamonds in the market, the illicit trade of these diamonds still exists on much smaller scales.
In reality, this paper trail happens at the batch level, which means that the Kimberley certificate will say something along the lines of "‘these 1245 carats of diamonds were imported from Botswana" which may contain more than 1,000 stones, and it does not provide a unique certificate for each diamond.
Further, these stones are pre-graded, which means that none of them have gone through the GIA for certification. This is a problem because for example when a client wants to buy a 1.06ct F VS2 diamond, what they want ideally is that there is a Kimberley certificate stating that this 1.06ct F VS2 was sourced from xyz. This is unfortunately not the case.
The diamond supply chain works as follows: Diamond miners such as DeBeers sell their diamond roughs exclusively to "sightholders" of their choosing (a company authorized to buy diamonds from De Beers). Every sightholder must buy a minimum quantity every month in order to maintain their sightholder status. These sightholders in turn cut and polish the rough diamonds at various diamond centers around the world (notably Antwerp & India), and then sell them to dealers, who in turn sell and market them to retailers (such as ourselves). Sometimes we buy from sightholders, but dealers serve a big function too because they hold a lot of goods on their inventory for memo basis.
To make a long story short, when we ask for origin information, the best that we can hope for is that the sightholder and dealer keep a detailed paper trail of the diamond's journey, and we rely on their reputation and credibility to tell us where the diamond came from. There is unfortunately no direct link between each individual diamond and the original Kimberley certificate. In the end, most participants in this supply chain play by the book and incidents of illicit trade have diminished vastly since the early 2000.
The market participants at the top have too much to lose, so the largest diamond companies such no longer buy rough diamonds from auction (which is how origin becomes obscured), and nowadays they maintain vertical manufacturing, and only mines from non-conflict and friendly governments. For Ken & Dana Design, it is very important for us to work only with the best suppliers; the ones with a long history and play only by the book.
When looking for a diamond, current best guidance indicates to avoid diamonds from Zimbabwe and Angola as human rights violations at mining sites are still occurring. But, your diamond purchase from any other African country as the source helps the countries funnel resources to mining endeavors there, helping to improve the industries and the lives of the miners.
At Ken & Dana Design, we adhere to all the protocols of the Kimberley Process and have developed long-standing relationships with our diamond suppliers. We take due diligence very seriously in regards to choosing the diamonds we recommend to our clients, and uphold the highest ethical and conflict-free standards in our selection.