The Company

The birth of Capital Diamond

Diamond dealers in Belgium since 1992, Edward Ventura & Jess Koskas decided in 2014 to create the platform Capital Diamond Market.

The primary strength of this platform lies at the source. Indeed, without going through any intermediary, we go directly to supply us at the heart of the extraction mine.

Our international network allows us to go in search of the best stones from around the world into one purpose: to offer you the best quality, at a price defying the rules of investment diamonds market.

In the recent years, gold facing slower growth, we are seeing a growing demand for diamond. Our customers have started to show a growing interest in the investment diamond.

Specializing in investment diamonds, our team of experienced and passionate experts, bring you our 15 years of experience in the trading of precious stones.

Contact us

An experts team at your service since 15 years


Having made a profession from their passion, our handpicked gemologists bring you all their knowledge and skills.
A diamond must be scrupulously and thoroughly studied. Our expert gemologist team you guarantees that service.

Nos Courtiers

Our diamond brokers: In order to ensure your investments, our brokers are proving to be ideal partners. They will help you in the acquisition of quality diamonds. Having available a vast network of professional contacts (wholesalers, auction houses, cutters, diamond dealers...), our brokers will conduct all your research.

Nos Fiscalistes

Experienced and abreast of the market, our tax experts are there to guide you in your investment and advise you on the best ways to invest in order to take advantage of the most favorable tax.