Gemworld International, Inc.Independent Appraisers to the Consumer
2640 Patriot Blvd, Suite 240
Glenview, IL 60026
phone: 847.657.0555 x 205
Hours: By Appointment Only Monday through Friday, 9am to 5pm.
About Gemworld: Founded in 1982, Gemworld, is the gem industry's premier source for current, as well as historical, gemstone and diamond pricing and market trends information. As the publishers of the internationally recognized wholesale price publication, the GemGuide, we are uniquely positioned to conduct valuation research on a broad range of gem varieties and related topics. Whether you require an appraisal for a single item, a collection, or a comprehensive research project, our experienced staff is prepared to provide reliable valuation data.
From pricing data to market trends to business planning, Gemworld can help. After determining your project objectives, our staff will design and execute a research model tailored to your individual needs. The research is conducted with the goal of providing clients with reliable information. We have prepared strategic business plans, gemstone production analysis reports and market trends and sales reports for major mining companies and manufacturers worldwide. Clients include mining companies, lawyers, insurance companies, government agencies and private collectors.
Summary of Qualifications
Stuart Robertson, GG
Graduate Gemologist (GIA)
Richard B. Drucker, GG, RMV
Graduate Gemologist (GIA)
Registered Master Valuer #461802
Professional Associations and Affiliations:
Gemological Institute of America Alumni and Associates
Gemworld is located between I-90 and I-94 off of Willow, in Glenview, IL. Our offices are located on the southwest corner of Patriot and Lehigh in the Patriot Courtyards. From Willow, turn South on Patriot. The first intersection is Lehigh. There is a stoplight. Take a right (West). Lehigh will dead end. There are two two-story buildings that will be on your left. There is a glass enclosed stairwell/elevator system in between. You will find the Suite Numbers located on the south side of this elevator system. We are located in the second building on the second floor.
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Stuart Robertson, GG (GIA)Stuart Robertson is the Research Director for Gemworld International, Inc., located in Glenview, Illinois. Gemworld International, Inc., is a research and consulting firm that monitors relevant developments regarding the worldwide diamond and colored gemstone trade. Mr. Robertson was appointed Gemworld’s Research Director and Gemstone Editor in October of 1998. His primary responsibilities include supervising the collection and interpretation of pricing data and related research conducted by the company’s research staff.
Mr. Robertson also conducts general research and authors reports and articles regarding market trends observed in areas including: exploration and mining from established geological locations, as well as issues related to treatment disclosure, identification and detection of treatments and their effect on pricing and value. Mr. Robertson has presented lectures on various aspects of gemology in both public and gem industry forums. Mr. Robertson has more than 20 years experience in the jewelry industry.
Professional Education and Affiliations
- Graduate Gemologist, Gemological Institute of America (GIA), 1993
- Accredited Senior Gemologist, Accredited Gemologists Association (AGA), 2000-present
- National Association of Jewelry Appraisers (NAJA), 1996, 2004-present
Stuart completed the International Society of Appraisers Appraisal Principles Core Courses in 1993. Course material included the Foundations of Professional Practice, Ethics and Conduct of the Professional Appraiser, Business Communication and Development, Report Writing Techniques, Terminology, Identification and Authentication Procedures, Methodology of Market and Value Research, Determining Function and Purpose of Appraisal, Detailed Narrative Report Writing, Principles of Appraising for U.S. Federal Tax Functions, Legal Aspects of Appraising, and Responsibilities of the Personal Property Appraisal Practitioner. The courses concluded with an extensive, qualifying examination.
Participation in educational seminars, lectures and conferences are an important aspect to staying competent in a professional field. Mr. Robertson attends programs pertaining to gemology annually. The most significant of those programs are mentioned here: Understanding USPAP- A Personal Property Perspective (National Appraisal Consultants 1995), International Conference on Appraising (ISA 1995), National Conference (NAJA 1997, attended as a lecturer in 2001, 2003 and 2008) Fracture Filling of Gemstones (GIA), Advanced Diamond Clarity Grading (GIA), Identifying Challenging Synthetics (GIA), Laboratory Update (AGTA-GTC 2002, 2003, 2004, 2005 & 2006), Expert Witness (ISA 1999), Harnessing The Power of Insurance Appraising (Hoefer 1999). International Gemological Research Conference and GIA Symposium, 2006, World of Gems Conference, 2008 and AGTA-GTC Corundum Treatments, 2008.
Richard B. Drucker, GGRichard Drucker is the president of Gemworld International, Inc. in Glenview, Illinois. As a third generation jeweler, he entered the business in 1979. In 1982, he began a pricing publication now known as the GemGuide. The GemGuide is used in more than 20 countries. In 2002, he became the owner and licensing distributor for GemGuide Appraisal Software, a sophisticated program used by nearly 1,000 jewelry appraisers. Drucker now serves as publisher, appraiser, consultant, lecturer, and author.
Actively involved in the jewelry industry, he was the president of the Illinois-Wisconsin GIA Alumni chapter from 1987-1991. In 1993, he was elected as the first Chairman of the Gemological Institute of America Alumni & Associates International Board of Governors and in 2000 he received an Alumni Leadership Award for exemplary service in this role. He is now a board member on the GIA Alumni Executive Committee. In 2006, he was bestowed the Antonio C. Bonanno Excellence in Gemology industry award. In 2007, Drucker was appointed to the board of the American Gem Trade Association Gem Testing Center, located in New York.
Drucker has lectured for many organizations throughout the world including the Gemological Institute of America Alumni Association, American Society of Appraisers, International Society of Appraisers, American Gem Trade Association, Accredited Gemologists Association, National Association of Jewelry Appraisers, American Gem Society, Canadian Gemmological Association, Scottish Gemmological Association, and the National Association of Goldsmiths (United Kingdom). He has been an integral part of many legal cases including work for the Internal Revenue Service, the United States Postal Inspector, the Federal Bureau of Investigation, and the United States Customs Service.
Credentials include: Graduate Gemologist of the Gemological Institute of America; Senior Member of the National Association of Jewelry Appraisers; Registered Master Valuer #461802; Senior Gemologist—Accredited Gemologists Association (past-Vice President).
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