Brokerage Services

Brokerage Services

Let me sell your jewelry for you! I can find the best market. There is no conflict of interest with my appraisal services.

Please call for an appointment – 860-927-0179. Koblenz & Co. maintains a portable gemological lab.


Graduate Gemologist (1988) Gemological Institute of America
GIA Alumni Association – President of the award winning Manhattan Chapter (2001 – present)
2010 Winner – The International Alumni Achievement Award – GIA Alumni Association
2005 Volunteer of the Year – GIA Alumni Association
2002 Most Outstanding Chapter Member of the Year – GIA Alumni Association

Listed with the Jeweler’s Board of Trade
Senior Member – National Association of Jewelry Appraisers
Member – Association for the Study of Jewelry and Related Arts
Member – The American Society of Jewelry Historians
Accredited Senior Gemologists – Accredited Gemologists Association

Koblenz & Co Antique & Estate Jewelry  31 North Main Street Kent, CT 06757   Phone: 860-927-0179