News & Press: Member News

Supplier Spotlight: Grunberger Diamonds Inc.

Thursday, June 15, 2017  
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Grunberger Diamonds logo

In hopes of a better life and more opportunity, Samuel Grunberger, a Slovakian immigrant, settled in Antwerp, Belgium in the 1930s and founded Grunberger Diamonds, Inc. However, Samuel had to halt production and close his company’s doors during World War II in order to escape religious persecution and the Nazi’s sweeping reign.

When the war ended, Samuel, who fled Belgium with his wife and son, Marcel, returned to a recovering Antwerp with no business and very little money to his name. But it was his tenacity and grit that gave him the strength to rebuild his company, which then became the moral and ethical foundation Grunberger Diamonds, Inc. stands on today.

Grunberger at JCK
Grunberger Precision Cut® banner at JCK.

The strength of an individual like Samuel was impressive; however, it was the support of family that eventually made this business the world’s largest producer of AGS 000 Ideal Cut, Hearts and Arrows melee.

Today, Grunberger Diamonds is still owned and run by Marcel and his family. As each generation joins the family business, and as the business expands to different corners of the world, the Grunberger's understand the importance of remaining authentic, ethical, and consistent.

David Grunberger, the grandson of Marcel, tells us more about Grunberger Diamonds’ AGS membership.

How has being a member of the American Gem Society helped you and Grunberger Diamonds?

Production hall in Vietman
A production hall in Vietnam.

AGS places a high importance on maintaining an environment of professionalism and fostering opportunities for personal growth. Through continued education and networking, AGS provides us with the knowledge to stay ahead of trends and to better understand consumer behavior and retailer needs.

What advice do you have for new members of the AGS? 

Your membership is what you make it. The American Gem Society offers members many of the tools and resources they need to stay ahead of the curve. Learn as much as you can; establish and maintain strong partnerships with key suppliers and connect with your clients. After all, they are the lifeline of your business.

What best practices do you utilize in your company and what inspired you to implement them?

We use the latest technology M-SCREEN+ to make 100% sure that all our stones are ALL NATURAL. ALL THE TIME. To learn more about M-SCREEN+, click here to view a video.

Plus, being members of AGS and RJC (Responsible Jewelry Council) ensures that Grunberger Diamonds adheres to the strictest ethical and business standards.

Through digital media, you've taken Grunberger Diamonds to the next level. Can you tell us about that?

In addition to sending out a monthly email newsletter, we update our website on a regular basis with the latest news and developments in our company and industry. While at the 2017 JCK Las Vegas show we used a revolutionary holographic display to showcase the unique characteristics of the Grunberger Precision Cut®. Click here to see the showcase in action!

Tell us how are you leverage your AGS membership in your marketing and sales presentations.

postcardIn all of our handouts and ads, we emphasize that we are AGS Suppliers and that all our diamonds are cut to the AGS 000 standard.

When I am working with a customer, I always mention that Grunberger Diamonds is a Registered Supplier and that all our diamonds are cut to AGS 000 standards. If they are also members of AGS, I mention the ASET – as it is the easiest way to explain and demonstrate light performance and cut consistency. The patterns of the ASET make my job much easier!

If you'd like to know more about Grunberger Diamonds' locations, you may click on the following videos:



Mission Statement

The American Gem Society (AGS) is a nonprofit trade association of fine jewelry professionals dedicated to setting, maintaining and promoting the highest standards of ethical conduct and professional behavior through education, accreditation, recertification of its membership, gemological standards, and gemological research.

The Society is committed to providing educational products to inform and protect the consumer and to contributing to the betterment of the trade by creating industry standards to protect the jewelry-buying public and the fine jewelry industry as a whole.

AGS Laboratories, founded to support the AGS mission, is a nonprofit diamond grading laboratory with a mission of consumer protection. Adhering to the AGS Diamond Grading Standards, AGS Laboratories is dedicated to offering diamond grading reports that provide consistency and accuracy based on science.

American Gem Society