For nearly a century, the Hartman family has been deeply rooted in the world of jewelry and gemstones. Across five generations, this heritage has been shaped by hands-on experience in every facet of the trade, from mining and manufacturing to wholesale distribution and international auctions.
Hartman Horology & Gemological Research (HHGR) brings this collective legacy into the laboratory. Grounded in tradition yet driven by curiosity, HHGR approaches each jewel and timepiece as an opportunity for discovery. Every valuation and evaluation is informed not only by technical expertise, but by a lifelong passion for understanding materials, craftsmanship and provenance.
At HHGR, research is a journey where heritage meets precision, and exploration remains at the heart of every analysis.
Over twenty years in teh fine jewelry and timepiece industry.
Masters Degree from the University of South Florida in 20th Century American History. Expert in World's Fair Collectibles. Professional Numismatist for over 20 years. Published Author of Pocket Watch Primer. Presented a numismatic and timepiece show on national television for 15 years.
Graduate Gemologist in Residence (GIA)
Certified Insurance Appraiser (JIAI)
Charter Member of the GIA Alumni Association
GIA Graduate Gemologist (2018)
Cerfitied Jewelry Appraiser
Bench Jeweler
Fine jewelry often represents more than its material value. Engagement rings, heirloom pieces, and rare gemstones carry deep sentimental significance, and in many cases represent substantial financial investment. A professional jewelry appraisal is the key document that establishes the value and identity of these items...
Professional gemstone grading is performed by trained specialists known as Graduate Gemologists, who are educated in the scientific identification, evaluation, and documentation of gemstones. While both diamonds and colored gemstones undergo careful examination, the grading systems and evaluation priorities differ significantly between the two.
Horology is the scientific and artistic study of timekeeping devices. The field encompasses the design, construction, history, and repair of clocks and watches. For centuries, horologists have developed increasingly sophisticated mechanisms to measure time with precision.