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About Heritage Auctions - Jewelry & Timepieces

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Jewelry & Timepieces

Headshot photo of Jill Burgum
Jill Burgum
Senior Director, Fine Jewelry, Dallas
1-877-HERITAGE (437-4824)  x1697
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Jill Burgum, Senior Director of Fine Jewelry for Heritage Auctions, brings a wealth of jewelry expertise to the company.

A graduate of University of Hawaii at Manoa, Ms. Burgum received her B.A. in Art History. After completing her degree, she attended Bowman Tech and Stewart's International, both for training in jewelry manufacturing and repair, then the Gemological Institute of America in Santa Monica, California, where she completed degrees in both Graduate Gemology and Jewelry Design in 1994.

Ms. Burgum began her working career as an on-call preview worker for Sotheby's Beverly Hills, California. She then moved to San Francisco as a jewelry cataloguer for Butterfield & Butterfield Auctions in 1996, transferring to their Los Angeles Jewelry department in 1997 as lead specialist, which she eventually left to build two jewelry web sites for start-up companies. She has also worked in retail jewelry sales and owned her own independent jewelry appraisal business.

She has been a contributor to Art + Auction, Brilliant, Eclat, Modern Jeweler, MSN Money, and Rapaport magazines.

Ms. Burgum has been a guest lecturer for the Los Angeles Natural History Museum, Gem & Mineral Council, and appeared as a specialist on HGTV, KTLA, CNN, FOX Business and ANTIQUES ROADSHOW.

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Ruth Thuston
Director, Fine Jewelry, Chicago
1-877-HERITAGE (437-4824)  x1929
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Ruth Thuston, who joined Heritage Auctions’ Chicago office as Director of Fine Jewelry, brings a wide range of jewelry experience to her position. Providing wise and fair service to clients who choose to sell their jewelry assets is of utmost importance to Ruth. For more than a decade she directed the Chicago office of CIRCA, an international company that buys and resells antique, period and estate jewelry, during which she facilitated the selling process for thousands of clients. Earlier in her career, she channeled her passion for jewelry helping clients find the perfect item at both CD Peacock and Sidney Garber. Ruth holds a BA in Music from Albion College and a Graduate Gemologist degree from Gemological Institute of America (GIA).  She is a member and former chapter president of the Women’s Jewelry Association, (WJA), in addition to being a member of The American Society of Jewelry Historians and Association and candidate member of the National Association of Jewelry Appraisers (NAJA).  Ruth is a recipient of the National WJA Shining Star award in recognition of her contributions to her local WJA chapter.

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Jim Wolf
Director of Watches & Fine Timepieces
1-877-HERITAGE (437-4824)  x1659
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Headshot photo of Jessica DuBroc
Jessica DuBroc
Assistant Director, Fine Jewelry, Dallas
1-877-HERITAGE (437-4824)  x1978
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Jessica DuBroc is a graduate of the University of Texas at Austin, and obtained her Graduate Gemologist degree through the Gemological Institute of America (GIA). Her early interest in the jewelry business stemmed from her family, namely her great-grandfather, who was a diamond cutter, and grandfather, who operated a jewelry business. She has worked in a number of jewelry venues, including wholesale, retail, consignment, appraisal, and auction for over a decade. Jessica is a member of the National Association of Jewelry Appraisers (NAJA) and Women’s Jewelry Association (WJA). 

Headshot photo of Tracy Sherman
Tracy Sherman
Director, Fine Jewelry, Palm Beach & New York
1-877-HERITAGE (437-4824)  x1146
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Before joining Heritage, Tracy originally hailed from the Buffalo, New York area and was working toward a BA in Art History at SUNY Buffalo before she was given an opportunity to start her career in Jewelry at Sotheby’s in NYC. Over 22 years, Tracy developed her expertise in jewelry while heading various departments. As an auctioneer, she proudly auctioned the estates of Ella Fitzgerald and George Burns among others, and was an integral player for the jewelry in auctions for the Duchess of Windsor, Andy Warhol and Jackie Kennedy Onassis while at Sotheby’s.  Tracy left Sotheby’s to open her own jewelry brokerage business and do what she loves — helping clients refine their collections by adding to them or selling their unworn or unwanted pieces. Among her accomplishment, she spearheaded the sale of the estate of Marge Kelly’s jewelry collection at public auction for $8 million. In addition, she opened and ran a Palm Beach buying office for a New York firm (CIRCA) for six years.  For the past four years, Tracy has returned to run her own business in Palm Beach, assisting clients in all areas of art and antique collecting, whether through formal appraisals, buying or selling, and using her network of allied professionals and collectors to achieve the best financial outcome for her clients. Additionally, she is USPAP certified to ensure compliance with today’s insurance and IRS requirements.   

Headshot photo of Gina D'Onofrio
Gina D'Onofrio
Director, Fine Jewelry, Beverly Hills
1-877-HERITAGE (437-4824)  x1153
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With work in the retail, auction and manufacturing sectors of the jewelry industry since 1989, Gina D’Onofrio’s experience encompasses jewelry design and production, appraisals, buying and selling of contemporary, antique and period jewelry, sales and management.

Prior to joining Heritage, Gina operated an independent gemological laboratory, appraisal service and consulting firm and has been catering to private individuals, banks, trusts, non-profit organizations, insurance companies, legal firms and the jewelry trade in the greater Los Angeles area.

Gina received her Master Gemologist Appraiser® designation, upon completion of appraisal studies, written and practical examinations and peer appraisal report review with the American Society of Appraisers. In addition, she was awarded the Certified Master Appraiser designation with the National Association of Jewelry Appraisers. In 2013, Gina received Los Angeles Magazine's coveted “Best in LA” award for her Jewelry Appraisal Services.

She conducts presentations and speeches about appraisal and jewelry related topics to private and corporate groups in the Los Angeles area. Gina is currently serving as Gems and Jewelry Education Chair for the American Society of Appraisers and co-instructor for their Appraisal Report Writing For Insurance Coverage course.

Professional Affiliations 

• Fellow of the Gemmological Association of Great Britain (FGA)  

• Fellow of The Gemological Association of Australia (FGAA) 

• Certified Master Appraiser of the National Association of Jewelry Appraisers (NAJA)  

• Accredited Senior Gemologist, Accredited Gemologists Association (AGA) 

• Member of the National Association of Watch and Clock Collectors, (NAWCC) 

• Accredited Senior Member & Master Gemologist Appraiser®, (ASA)   

Headshot photo of Jonathon Burford
Jonathon Burford
Consignment Director, Watches & Fine Timepieces, Beverly Hills
1-877-HERITAGE (437-4824)  x1132
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Jonathan Burford has worked in the fine watches and vintage automobile industry for the majority of his professional career. Fascinated by mechanical engineering, he started collecting wristwatches from a young age, primarily those with a motorsports association that reflected his other great passion for classic cars and racing.  After studying for a Business and Economics degree from UWE Bristol in Great Britain, Jonathan worked as a Director of Sales at the international marketing company Mice Group plc. While competing in a number of pan European classic car rallies and race series, he joined the luxury lifestyle brand Supercar Club as Commercial Director. There, he built out the luxury products arm and re-launched its luxury lifestyle Magazine Supercar, writing regularly on fine vintage and modern watches as well as super cars and other luxury products. Jonathan was luxury consultant to the British International Motorshow and curator to its Heritage Collection, as well as a number of UK-based luxury Concours d'Elegance events. He subsequently joined London-based Privatus, a private sales and advisory company focused on rare collectibles, as Head of Watches and Fine Timepieces, advising and brokering for a client base of private banks, family offices and other high net worth individuals. Jonathon has privately advised and assisted numerous high net worth clients with the sourcing, curating and disposal of fine watches, as well as helping to build two notable collections of vintage timepieces. He has written extensively on watch collecting and investing for a number of publications, including Bentley Magazine, EFG Private Bank and Arbuthnot Latham Private Bank Magazine. Jonathon relocated from London to Los Angeles in 2016 with his wife, a film editor, and two young children, joining his wife’s family that includes mother-in-law, legendary film editor and academy award winner Anne V. Coates.

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Keith Davis
Consignment Director, Watches & Fine Timepieces
1-877-HERITAGE (437-4824)  x1971
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Keith Davis has worked within the timepiece industry for the entirety of his professional career, gaining valuable experience in nearly every aspect of the business. Prior to joining Heritage Auctions, he held executive and management positions at Richemont Group and LVMH. In his last role, Keith served as Commercial Director for Vacheron Constantin, overseeing the wholesale distribution for the brand in the U.S. and Canada. Prior to that position, he managed multiple regions for Bvlgari N.A., while also serving as the technical watch trainer for their retail and wholesale distribution.  

Keith’s introduction to the industry started in watchmaking and progressed to vintage restoration apprenticeships in England and the U.S. After several years of study, he worked in luxury watch retail and as a private appraiser and authenticator of vintage and antique wristwatches.

Headshot photo of Cristy DuRoss
Cristy DuRoss
Consignment Director, Luxury Accessories
1-877-HERITAGE (437-4824)  x1681
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With years of experience working in the luxury accessories market before joining Heritage Auctions, Cristy DuRoss put a potential career as a lawyer on hold to pursue her interest in fashion and luxury. After graduation from Texas Tech, she moved to Dallas for a sales position at a Cole Haan boutique before assuming similar positions at Stanley Korshak and with Cynthia Denton. Cristy then was approached to manage an Anne Fontaine boutique before deciding to try the selling side of luxury retail with Hermès, where she eventually spent 17 years.  

Once with Hermès, Cristy was chosen to participate in an intensive training program in Paris, where she was able to witness the making of a Kelly and a Birkin bag at an atelier. Additionally, she was picked for two sessions of Podium for Hermès, during which she helped managers conduct their buys. Her constant focus is on always exceeding the expectations of a client who has ordered an exceptional handbag or piece of jewelry. Within her own collection, Cristy personally owns numerous Hermès bags, along with Chanel, Prada and YSL.  

The native Texan enjoys spending time with her husband Randy and 14-year-old son Aidan. In addition to involving herself in and supporting his school and activities, she promotes her love of animals by donating to Operation Kindness.

Headshot photo of Ana Wroblaski
Ana Wroblaski
Assistant Director of Fine Jewelry, Beverly Hills
1-877-HERITAGE (437-4824)  x1154
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Prior to joining Heritage Auctions, Ana Wroblaski has been involved in the jewelry business on various levels since 1999. Born in Chicago and raised in Los Angeles, she joined John Moran Auctioneers in Pasadena during 2011 to take charge of their growing jewelry department. Previously, Ana spent five years at Bonham’s and Butterfield’s Los Angeles, first starting as assistant to the senior specialist before she was promoted to a specialist, appraising and cataloging jewelry that ranged from antique to modern.

Once Ana got a taste of working with precious metals on her own, she served as an apprentice with a master jeweler in the Downtown Los Angeles Jewelry District. Focusing on minerals and gems, she then went on to fabricate and design jewelry for her own line and others as well. Ana is a Graduate Gemologist, earning her diploma from the Gemological Institute of America (GIA), an Accredited Jewelry Professional (AJP) and is constantly continuing her education by attending workshops and seminars to stay abreast of treatments, new mine discoveries and current style trends in the jewelry world.  

Ana has earned and stays current with the Uniform Standards of Professional Appraisal Practice (USPAP), and is currently working on the accreditation curriculum with the American Society of Appraisers (ASA).

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