Meet the Experts

Joseph DuMouchelle, G.G.

President, Joseph DuMouchelle

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Joseph DuMouchelle has taken the DuMouchelle family heritage into its fourth generation. True to his heritage, he has developed a consummate knowledge of buying, selling, and appraising estates. But Joseph also has an extensive background in jewelry. Following his graduation, he studied at the Gemological Institute of America (GIA) and received his Graduate Gemologist degree. He went back to the family business, where he stayed for 10 years until he decided to branch out on his own. Joseph took his love and knowledge for jewelry, particularly estate jewelry, and established his own estate auction and appraisal firm. Together with his wife, Lindy, he hosts numerous estate auctions each year and handles more than 5,000 jewelry transactions.

In addition to his gemologist degree and his auction experience, Joseph has extensive training in estate appraisals. He is a member of the National Association of Jewelry Appraisers, the GIA Alumni Association and past President of the Accredited Gemologists Association. His unique training enables him to properly assess the true value of estate pieces, ensuring his clients receive the best value for their investments – a skill that only a handful of experts in the industry can offer.


Melinda (Lindy) Adducci, G.G.

Vice President, Joseph DuMouchelle

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Like Joseph, Lindy has an extensive background in gemology including a Graduate Gemologist degree from GIA. Lindy formed her love for jewelry working in retail, starting at the early age of 16. She met Joseph at an American Society of Appraisers event where he was the guest speaker. They merged their backgrounds, hers for fine retail jewelry and his for the auction world to form their niche’ in handling beautiful gems and jewelry at auction

Lindy has an especially keen eye for the nuances in estate jewelry. When an appraiser colleague brought in a piece – which had been appraised at $110,000, it was Lindy who recognized that the unmarked mounting had the design characteristics of Oscar Heyman. When the identity of the piece was confirmed, the DuMouchelles sold it at auction for $600,000!

Lindy has served as a board member of the Michigan Jewelers Association, Accredited Gemologists Association and GIA Alumni -Michigan Chapter President. She is a member of the National Association of Jewelry Appraisers and the American Society of Appraisers.