Welcome to the World of Quinn
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Experts in helping people appraise, buy and sell diamonds, colored gemstones, jewelry, watches, precious metals and other valuables with transparency. We offer a broad spectrum of specialized professional services to best suit our clients’ needs. We are committed to high ethical standards and providing our clients with unbiased information. We educate our clients and help them make informed decisions, saving them both time and money. We provide a private office laboratory environment that is both secure and pressure free. Our expertise combined with our exclusive network of buyers and sellers enables us to offer the most qualified services. We treat every person with an equal amount of respect and strive to build lasting relationships by having our client’s interests in mind as well as our own.
We specialize in diamonds (all sizes, shapes, cuts & colors), colored gemstones (Sapphire, Ruby, Emerald, Alexandrite, Tourmaline), estate designer jewelry (Van Cleef & Arpels, Cartier, Tiffany & Company, David Yurman), antique & period jewelry (Art Deco, Edwardian, Victorian, Art Nouveau), modern & traditional jewelry (engagement & anniversary rings, unique custom jewelry, stud earrings, tennis bracelets) and estate luxury watches (Rolex, Patek Philippe, Breitling, Omega). We can also assist with items of provenance, items of historical significance, coins and other valuables such as rare collectible items, artwork, antiques, etc.
We adhere to the standards set forth by the Uniform Standards of Professional Appraisal Practice (USPAP) and the National Association of Jewelry Appraisers (NAJA). Our grading standards are based on the most respected and recognized grading standards in the world; GIA (The Gemological Institute of America, the creator of the four C’s, our Alma Mater, and the foremost authority in gemology both as an educational institution and a research laboratory). We maintain current knowledge through constant market research and continuing education.
We have unlimited financial and client resources to liquidate everything from a single item to an entire estate. Almost every type of diamonds, colored gemstones, jewelry, watches and precious metals are of interest to us. Due to our extensive and diverse clientele, we have buyers for almost any category of these items and other valuables. We are actively buying every day to meet the demand of our clientele. We have assembled the best resources and we work with wholesalers, auction houses, retailers, private individuals, mines, cutters, designers and more to bring you the best from around the world. We listen to your desires and budget concerns and guide you through an informative process to help you acquire the most for your money. We will never pressure you to buy or sell and everything is informative, private and confidential.
Our specialized professional services are ideal for private individuals, retailers, wholesalers, attorneys, executors, trustees, financial planners, non-profit organizations, insurance companies & agents, auctioneers and other appraisers, buyers and sellers. We are conveniently located at Foster Plaza in Green Tree, PA (5 minutes from downtown Pittsburgh and 15 minutes from Pittsburgh International Airport). Please feel free to explore our services menu for more detailed information on the service you require or call now for a no obligation, free consultation.
Owner, Thomas E. Quinn II GG (GIA), GJ (GIA), CM (NAJA)
Graduate Gemologist, Graduate Jeweler, The Gemological Institute of America (GIA)
Certified Member, The National Association of Jewelry Appraisers (NAJA)
By Appointment Only 412.848.9037
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