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Trusted Specialists

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Mark Topalian

Rugs and Carpets Expert 

Mark Topalian utilizes almost four decades of extensive training in antique and semi-antique Persian, Caucasian, Chinese, and European rugs and carpets in his antique Oriental rug business, M. Topalian, Inc.
Since 1994, he has been a consultant appraiser in Rugs and Carpets at Doyle New York.  His duties include appraising and cataloguing all rugs and carpets for estate appraisal services and auction purposes.  He also works as a consultant for the following appraisal firms:  Gurr Johns, Winston Art Group, Enservio Select, and Pall Mall Art Advisors.  He has been a featured appraiser on Antiques Roadshow since its inception in 1996, and has served on the Vetting Committee at the Winter Antiques show for the past 12 years.
He is a certified member of the Appraisers Association of America (AAA), and a member of the Art and Antique Dealers League of America.



Lorna J. Renner

Fine Silver and Metals Expert

Lorna J. Renner is an independent, personal property appraiser with extensive experience in the appraisal of fine, modern and antique pewter, silver plate and sterling objects.  She is an active member of the New York Silver Society and accredited with the Appraisers Association of America. She has worked with estate silver that has included a collection of Tiffany sterling and a vast collection of rare, antique Tiffany silverplate flatware, as well as cataloging and appraising the inventory of an established NY silver dealer. She has served many private clients requiring appraisals for insurance, donation, estate and equitable distribution purposes. 

Accredited in household contents, Lorna is experienced in appraising many categories of fine and decorative arts including metals, china and porcelain, glass, general household objects, furniture, collectables and posters. As an ongoing member of the First Presbyterian Church Tartan Fair Auction Committee, Lorna has spent hundreds of hours identifying and valuing the contents of high-end donor estates and bequeathed personal property located in and around Manhattan. 

The daughter of a collector and a lifelong appreciator of historic arts and decorative objects, Lorna hails from a global financial services background with Merrill Lynch and holds an MBA in accounting from Lubin School of Business and a membership in the International Honor Society in Economics, Omicron Delta Epsilon.


Robert C. Aretz Jr.

Gemologist, Jewelry and Gems Expert

Robert Aretz, Jr. is an independent, certified gemologist appraiser and fine jewelry consultant with over forty years in the field.  With experience specializing in antique jewelry, vintage jewelry, colored stones and diamonds, Rob founded, Gem Appraisers & Consultants in 1995 to focus on appraisals of fine jewelry, colored stones, pearls, diamonds and watches. Expert in appraisals for insurance, estate planning, and IRS estate and donation purposes, Rob serves the New York Metropolitan and Tristate areas.
A Graduate Gemologist (G.G.) from the Gemological Institute of America, Rob has in-depth experience in the jewelry industry that includes: manufacturing, retail sales, buying and selling of estate jewelry, and all aspects of jewelry valuation.
In addition to his title of gemologist, he is also a certified member of the Appraisers Association of America (AAA), a certified member of the International Society of Appraisers (ISA-CAPP) and a Senior member of the National Association of Jewelry Appraisers (NAJA).  He is a Board Alumni and former Board Treasurer of AAA, a past chairman of the Gems & Jewelry certification Committee, former Treasurer of the American Society of Jewelry Historians (ASJH), a GIA Education Advisory Committee member, a member of the American Gem Trade Association (AGTA) and an Accredited member of Gemologists Association (AGA).  

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