About the Hallmark Research Institute (HRI)

The Hallmark Research Institute (HRI) was founded by three well known experts and educators in the area of estate and contemporary jewelry, appraising, numismatics, and international hallmarks. This Institute is not a brick and mortar location, it travels globally for hallmark research and is renown for their production and presentation of a series of acclaimed dynamic visual lectures and hands-on workshops on precious metal hallmarks.

In 2009, HRI completed and published the first volume in a series of works on their research into world hallmarks. In 2010, a second edition of Volume 1 was introduced. In 2017, HRI has completed their second volume covering the rest of the world as a complement to Volume 1. HRI continues to conduct presentations to public and industry professionals.

HRI continues to collaborate with international professionals and assay offices, to gather and keep current accurate hallmark information and images, to disseminate information globally through their published works and lectures.  The goal is to further the accurate understanding and need for precious metal assaying and hallmarking worldwide. Funding for these projects are provided solely through the sales of their books, lectures, and private donations.  We are eternally grateful for everyone that has recognized the importance of the work that has gone into each volume, and for those that shared our goal of accuracy and contributed their part to make it happen.

Technical Educators and Founders of HRI:
William Whetstone BA-H (Hon)
Danusia Niklewicz GG,FGA,ISA-CAPP,ASA,
Lindy Matula GG, ASA