Welcome to Diamond Hallmarking Center
The DHC has provided hallmarking services to the industry for years.We provide Certification and Consultation for Diamonds & Gemstone with international standards. We take pride in providing fast, high quality and easy Certification service with a clear focus on our customers needs. Our business philosophy is to "keep it simple". By keeping it simple we find that things just work better and we can focus more time and energy on the job in hand. We will always select the most appropriate marking method for your good.