Work History

Work History
Jan 1991 - Present

Acquisitions Advisor/Portfolio Manager

Pastor Geneve

Pastor-Genève b.v.b.a. is a dealer in rare colored diamonds, established in 1991 by professionals who have spent decades specializing in the study of precious gems.

Our clients include collectors and connoisseurs from all walks of life who want to partake in the sheer joy of owning something that is both valuable and beautiful. Many of our clients have come to us to learn more about those rare stones which have only in recent years reached the consciousness of a large and growing constituency of admirers.We also pride ourselves in having attracted an advisory board whose members enjoy the highest scientific and technical credentials and who are recognized for their accomplishments throughout the industry. Sourcing and classifying colored diamonds is an art, because the authenticated value and marketability of these stones must ultimately rest on their physical properties.

Pastor Geneve's Diamonds



Rare Gems


Professional Networking


Authoring, Writing


Headquartered in Geneva, Switzerland, Pastor Geneve serves as an acquisitions adviser of rare colored diamonds. Pastor Geneve’s advisers include Senior Executive Consultant Stephen Hershoff, a professional with more than 40 years of experience working with precious stones, and Stephen C. Hofer, one of the world’s top-ranking experts on color measurement in diamonds. These two consultants work with collectors around the world, and they provide unmatched advice and technical expertise on acquiring, storing, grading/certifying, and re-marketing colored diamond holdings. Stephen Hershoff of Pastor Geneve began his career dealing in opals, diamonds, and other colored gems in London during the 1960s. Throughout the 60s and 70s, he serviced private international collectors and connoisseurs before moving to North America to oversee a company that grew into one of the world’s leading gem dealers, as identified by The Dow Jones-Irwin Guide. Over the years, Mr. Hershoff of Pastor Geneve has written about the colored gems industry for such consumer and niche magazines as the Financial Service Times, Wealth magazine, and Modern Jeweler. An accomplished speaker, he also regularly presents at international trade functions, including the Investment Seminars, Inc., symposium. Pastor Geneve Consultant Stephen C. Hofer serves as a modern pioneer within an industry thousands of years old. During his career, Mr. Hofer has founded innovative methods of measuring color and color saturation in gems. He created a now universally recognized grading system for colored diamonds, and over the years, he has advised numerous top diamond cutters on how to accentuate color in their gems during the processing stage. Mr. Hofer also is the author of Collecting and Classifying Coloured Diamonds, an 800-page reference book used by industry professionals and consumers. Mr. Hofer personally advises Pastor Geneve and its suppliers while also serving as a consultant to Sotheby’s New York office, Christies, and other dealers.

Growth in the International Jewelry Market

Pastor Geneve, a provider of colored diamonds, helps collectors all over the world satisfy their gemstone needs. In 2013, the jewelry market in the world's largest economies demonstrated robust growth. In the United States, for instance, retail jewelry sales jumped more than 7.5 percent in the period between May 2012 and May 2013. For Europe-based providers like Pastor Geneve, jewelry sales continue to grow throughout the continent, and luxury retailers reported healthy global sales on the strength of demand from those seeking rare and antique pieces.In fact, individual pieces continue to draw a great deal of interest at auction. For instance, a major New York auction house plans to offer three very high-quality colored diamonds soon. The first of the triad, a pink diamond, weighs more than 8.75 carats and will likely sell in the range of $5 million to $6 million. The second diamond, a 3.8-carat blue diamond, will likely bring in more than $2.5 million. Finally, a yellow diamond of more than 5 carats could sell for anywhere from $200,000 to $300,000.