Who We Are
Billiton Diamond Auctions DMCC is a new auction house set up to sell productions of rough diamonds from around the world.
Billiton Diamond Auctions has accumulated over 20 years of experience in designing and operating hundreds of auction events for rough diamonds.
Billiton Diamond Auctions will market its supplies by means of spot market internet auctions, using the Nobel Prize winning theory of the Highest Losing Bid for Pricing purposes.
Antony Dear

Tony has worked in the diamond industry for over 30 years in a variety of roles
He joined De Beers in 1992 and spent 6 years buying rough diamonds in Belgium, DRC, Congo and Guinea.

In his role as Marketing Manager in BHP Billiton Tony was part of the team that introduced online auctions, using ascending clock software. These auctions provided a Spot Price for rough diamonds that was also used to price Term Supply Contracts.

In 2014 Tony joined Grib Diamonds and has held the position of Head of Sales since 2016. Grib continued with the model used by BHP Billiton to sell all of its production via auctions.

In 2019 Tony helped start the procurement of outside productions and was responsible for designing new assortments, Price Books and Auctioning those goods at substantial profit margins.

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Jamal has over 25 years worked across diverse range of Industries and commodities.

Professional journey started in 1998 with various IT roles in HSBC and CSC before moving to Logistics, Supply Chain Management and ISAP implementation with BHP Billiton Energy Coal in the Hague
Joined BHP Billiton Diamonds as Marketing Manager in 2010 and become part of the team running and manging online Auctions, the BHP Auctions soon become the pricing benchmark for the industry.

In 2014 Jamal joined Grib Diamonds along with other ex-BHP Billiton Management, in his role of Business Systems and Sales Manager he manages the Business systems and processes of the company including the Inventory Management and Auction systems. Grib continues to follow model used by BHP Billiton to sell all its goods via Auctions.

Frequently Asked Questions (FAQ)
Billiton Diamond Auctions DMCC is driven by its three guiding principles: transparency, integrity and integrity.
Our auction system was designed according to the latest auction and game theory. The methodology is based on the Nobel winning economist William Vickery’s auction theory on second price auctions. This is where the highest bidders win but the price is set by the highest losing bid. This gives the bidder the incentive to bid their true value on the goods – and not worry about the ‘winner’s curse.’
The winner’s curse, or buyers’ remorse, is when the winner, in a tender, pays significantly over the other bids due to incomplete information. As a result of not wanting to make mistakes, many bidders “shade” their bids for fear of overpaying, thus not giving a true reflection of the market value.
Transparency is a key part of the auction methodology and we provide detailed information on the quality distributions of the Diamond Auctions on offer. This is to help remove the uncertainty for our customers so together with a physical inspection they know exactly what they are bidding on.
Our integrity is found, among others, in the consistency in our assortments. We spend a lot of time and effort on our quality control to ensure our descriptions, quality adjustments and sales parcels are consistent. We also aim to de-bundle parcels, a decision that is guided by the principle that customers willing to pay the market price for what they need, but expect a discount for goods they have to re-work or even re-sell. The de-bundling will be executed according to meticulous sorting of sizes, colors and quality models.
Billiton Diamond Auctions DMCC likes competition and wants to sell its rough Diamond Auctions to competitive companies. Therefore, we will invite companies to participate in the auctions based on goods availability and competitiveness. It is important to note that participating customers will be ranked according to performance in the auctions and that the results thereof will determine future invitations.
For participating customers, the regular legal (AML) documentation will become a criteria to do business with us. We also would like our customers to become members of the Responsible Jewellery Council (RJC).
Interested parties are invited to fill out the Billiton Diamond Expression of Interest Form. Please send an email to info@billitondiamondauctions.com eto receive a copy of the form.
For rough diamond sellers, Antwerp’s critical mass of customers is fundamental to running repetitive and competitive auctions, and to optimizing the diamond viewing processes which precede the auctions themselves. Also, anyone who wants to buy rough Diamond Auctions will have Antwerp on his regular itinerary.
Of course, we recognize that other diamond centers are significantly stepping up their efforts to attract rough diamond producers. While the decision making is still some time away we may consider staging certain auctions, in particular of better quality goods, in other locations.