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Gem World is a key authority in the trade of gemstones in Belgium and abroad.

We are proudly celebrating our 36th anniversary this year. 



Located in the heart of Antwerp's Diamond district (Vestingstraat 64/101, 2018 Antwerp, Belgium), we offer our clients a wide range of precious and semi-precious gemstones, with a specialisation in unheated gemstones.


Gem World was founded in 1982 by Jehuda Gorenstein, and immediately established itself as a key authority in the in the trade of gemstones.


Jehuda Gorenstein (1950-2010)


In 1967, Jehuda Gorenstein started to polish diamonds in his native Israel. In 1980, he moved to Antwerp, Belgium, to specialize more in cleaving and polishing diamonds. During this period, he discovered his passion for colour gemstones, and founded Gem World. In 2010, Jehuda passed away and his son Guy Gorenstein took over the company.


Guy Gorenstein


In 2004, after his formation in cutting and polishing diamonds, Guy Gorenstein joined Gem World. His speciality is diamond machinery from Belgium (WTOCD), diamond grading, rough diamonds, and gemmology (HRD). 

Maxime Ruelle 

In 2016, Maxime joined the Gem World team after his training in cutting and polishing of gemstones, he specializes in the reparation, recutting and repolishing of any type of coloured stones.

Our Vision

Treating every client as a valued partner, Gem World is committed to providing the highest level of service. By personally selecting the gems at the source, we assure an outstanding quality and choice, at the right price.


We are a family business and are personally involved in the purchase and sales of our collection. Our products are carefully selected and directly imported from the source. We fly several times a year to the Far East and South America to ensure the diversity of our collection and to provide you with the highest quality at the best price.

Our dedication to our clients, and insight to their needs has made us one of the most respected and trusted players in the industry.

Our Ethical Vision


When it comes to gemstones, the supply chains are often complex. The mining process, cutting and selling of gemstones usually take place in various countries. 


At this point, there is no presence of established bodies tracking the origin from mine to market. 


However, our years of valuable experience coupled with a profound market knowledge has led to a transparent, and compact supply chain which we are proud of. 


We, at Gemstone, carefully monitor the origin of our gemstones. We strongly care for our environment, sustainable employment conditions, and strive to ensure you with fairness, traceability and transparency as it relates to your product requirements- which is our mission. 


We envision providing our customers with a high quality, personal and professional service, at all times.

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