Mayer Herzl

Born to a family of wealthy gold traders in Vienna, Mayer Herzl initially apprenticed under a family friend who was a local jeweler.

A talented artist, Mayer created gold objects of vertu, but his interest soon turned to diamonds, which were growing increasingly popular at the time.

Under the name Herzl Brothers, Mayer founded the family firm in Vienna, Austria, in 1855.

Salomon Herzl

After Mayer, his son Salomon Herzl took over the family business, focusing on diamonds and fine jewelry.

He began trading with European neighbors, expanding the company’s operations to include Paris, Madrid, Antwerp, and Zurich.

Arthur Herzl

Salomon’s son Arthur took over the business in Vienna, and under his leadership, the business underwent several key changes.

As one of the original stockholders in the Antwerp Bourse, diamond marketplace, Arthur established a business relationship with David & Sohn, who remain one of our key partners to this day.

In 1937, he moved the company to New York, overseeing its growth for another decade. His children, Frances and Henry, took over after Arthur passed away.

Frances Herzl

Originally, Frances trained as a lawyer and practiced in Vienna. When her father passed away, she joined her brother Henry in running the family business.

A pioneer, Francis was one of the few women to work in the diamond trade at the time. In addition, she was one of the first women to join the Diamond Dealers Club, the first and foremost organization of its kind in the United States.

Henry Herzl

After arriving in the United States with his father in 1937, Henry studied physics at Dartmouth College.

Following Arthur’s passing, Henry took over the business and ran the company for forty-five years, dealing primarily with diamonds in the .50 to 5 carat range.

Henry was one of the first people in the diamond industry to use modern-day equipment for grading diamonds. He was also the first gem dealer to use a microscope and advanced mathematics in the cutting of diamonds.

Using his extensive education in physics and engineering, he became a master at cutting both rough and polished diamonds. Henry was an innovator who used his scientific knowledge to develop equipment and machinery that allowed for far more in-depth analysis of diamonds.

Roy Herzl

Roy was born in 1952 and joined the company in 1970. He began his career as a cutter by studying under Charles Van Auken, where Roy met his future wife, Allison Van Auken. For the next twenty years, Roy worked side by side with his father, Henry, to learn every aspect of the family business.

During the 1970’s and 80’s, Roy travelled to South Africa to purchase rough stones. He was a frequent flyer on the Concord and made regular trips throughout Europe:  Amsterdam, Antwerp, Geneva, London, Paris, and Zurich.

Roy and Jean Pierre David of Zurich’s David & Sohn were childhood friends whose friendship grew into the perfect partnership. Roy brought his cutting expertise and buying savvy to the table, while Jean Pierre cultivated client relationships in Europe. Together, they created opportunities to buy important estates with many unique and complex stones.

Roy became president of Roy Herzl, Inc. in 1977. His focus is primarily on large rare gems, including pink diamonds and other historically important stones. He is a mentor to his son, Adam, and has been teaching him the business since 2002.

Adam Herzl

Born in 1978, Adam began working in the business in 2002 after receiving an extensive education in gemology and diamond cutting from his father’s chief gemologist, who had over 25 years’ experience.

Along with Roy Herzl, Inc.’s partners in Zurich, David & Sohn, Adam’s focus has been on expanding the business to a more global clientele. Adam believes in buying and selling the best diamonds and jewelry available worldwide.

Adam has an eye for beauty, quality, and craftsmanship, and brings a highly-educated, passionate enthusiasm to his profession.

About Roy Herzl, Inc.

The Herzl family has been in the diamond and jewelry business since 1855. From our roots in Vienna to our present-day location in New York, each generation of the Herzl family has worked to expand the company globally.

Today, the company’s focus is the acquisition of fine diamonds and period jewelry. Working with a long-established, trusted network of global partners affords Roy Herzl, Inc. a vast market in which to buy and sell.


Sometimes a change in fashion, sentiment, finances or family circumstance may prompt you to reconsider your attachment to a piece of jewelry.

At Roy Herzl Inc., we would be honored to evaluate your item or collection of jewelry.

We are interested in all kinds of precious jewelry, particularly diamonds of a carat or more. Please do not hesitate to contact us to make an appointment.

Terms & Conditions



These terms and conditions constitute a contract between you and Roy Herzl Inc. ("Roy Herzl").



In order to operate and provide the services on this website, we may collect certain information about you. We use and protect that information to the best of our ability. In particular, we may access or disclose information about you, including the content of your communications, in order to: (a) comply with the law or respond to lawful requests or legal process; (b) protect the rights or property of Roy Herzl or our customers, including the enforcement of our agreements or policies governing your use of the service; or (c) act on a good faith belief that such access or disclosure is necessary to protect the personal safety of Roy Herzl employees, customers or the public.

Personal information collected through the service may be stored and processed in the United States or any other country in which Roy Herzl or its affiliates, subsidiaries or agents maintain facilities. By using the service, you consent to any such transfer of information outside of your country.


How We May Change the Terms and Conditions


These Terms and Conditions may change from time to time, and we encourage you to review them periodically. Your continued use of the Roy Herzl Website indicates your acceptance of any changes to these Terms and Conditions. Any changes to these Terms and Conditions are inapplicable to disputes arising, or arising out of events occurring, prior to the posting of such changes here.



The trademarks, logos, service marks and trade names (collectively the "Trademarks") displayed on the Roy Herzl Website or on content available through the Roy Herzl Website are registered and unregistered trademarks of Roy Herzl and may not be used unless authorized by the trademark owner. Nothing contained on this website should be construed as granting, by implication, estoppels, or otherwise, any license or right to use any trademark without our written permission. Your misuse of any trademark is strictly prohibited.



We provide the service 'as-is,' 'with all faults' and 'as available.' We do not guarantee the accuracy or timeliness of information available from the website. We and our affiliates, resellers, distributors and vendors give no express warranties, guarantees or conditions. You may have additional consumer rights under your local laws that this contract cannot change. We exclude any implied warranties including those of merchantability, fitness for a particular purpose, workmanlike effort and non-infringement.



You cannot recover any other damages, including consequential, lost profits, special, indirect, incidental or punitive damages.

This limitation applies to anything related to:
• the service,
• content (including code) on the Roy Herzl website,
• delays or failures you may have in initiating, conducting or completing any transmissions or transactions in connection with the service in an accurate or timely manner, and
• claims for breach of contract, breach of warranty, guarantee or condition, strict liability, negligence or other tort.
It also applies even if:
• this remedy does not fully compensate you for any losses, or fails of its essential purpose; or
• Roy Herzl knew or should have known about the possibility of the damages.
Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitations or exclusions may not apply to you. They also may not apply to you because your province or country may not allow the exclusion or limitation of incidental, consequential or other damages.



You agree to defend, indemnify and hold harmless Roy Herzl and its affiliated and related entities and each of their respective principals, officers, directors, managers, partners, members, shareholders, agents, employees, representatives, successors and assigns from and against any losses, liabilities, damages and expenses (including, without limitation, interest, penalties and reasonable attorneys’ fees and disbursements) which any of them may incur or become obligated to pay or for which any of them may become liable to pay in any claims against them, arising out of or in connection with Your breach of your representations, warranties, covenants or agreements contained herein.

Interpreting the Terms and Conditions


The Terms and Conditions set forth herein apply to the maximum extent permitted by law. A court may hold that we cannot enforce a part of this contract as written. If this happens, then you and we will replace that part with terms that most closely match the intent of the part that we cannot enforce. The rest of this contract will not change. This is the entire contract between you and us regarding your use of the service. It supersedes any prior contract or statements regarding your use of the service. If you have confidentiality obligations related to the service, those obligations remain in force.

Contracting Party, Choice of Law and Location for Resolving Disputes


Any dispute arising out of or in connection with these Terms and Conditions or any content or services provided for on the Roy Herzl website shall be heard and determined in the federal or state courts located in New York City. Users of the Roy Herzl website agree not to commence any litigation relating to the use of any of the Roy Herzl website, except in courts located in New York City. Users also waive any objections to venue of any such litigation in courts located in New York City and agree not to plead or claim that New York City is an inconvenient forum.